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If you are trying to install your old version of AutoCAD 2006 on Windows 11 you can run into lots of problems. Because there are so many issues, we created an App called the Longbow Converter to automatically smooth over installation and running issues for you. All you need to do is follow these steps to install your AutoCAD 2006 on Windows 11 and make it work…
IMPORTANT NOTE: Autodesk no longer supply License Activation codes for this version of AutoCAD. The best way is to transfer your existing license to the new PC but there are other options, we document them here
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protectionwhich includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD 2006
A quick word of advice: please follow the instructions below precisely as documented (including using the same folder names and paths) as this will significantly reduce the risk of having any problems…
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Now, start the Longbow Converter tool by double clicking the Longbow Converter shortcut on your Desktop…
Start the Longbow Converter tool
Insert your AutoCAD 2006 CD into your CDRom drive
Select the 2nd tab named “Old AutoCAD Installer Reviver”
Using the “…” button, path the to your AutoCAD 2006 CD
Click “Run Old Installer”
Read and follow all the prompts
If you see a dialog stating “An App on your PC needs the following Windows Feature: .NET Framework 3.5 (includes .NET 2.0 and 3.0)” be sure to click “Download and install this feature” as this must be installed in order for the setup to run
Once the AutoCAD 2006 setup starts, stop and read the next step…
In the setup program, navigate through each setup dialog as normal, with these exceptions…
When you click the Install link from your setup you may see a dialog box appear saying – “This program has compatibility issues” – simply check the “Don’t show this message again” and then click the “Run the program without getting help” button
When you arrive at the installation folder path setup dialog, **it’s vitally important to make sure you install to c:\acad2006 (not Program Files (x86)\AutoCAD 2006)**.
Once AutoCAD has installed
completely close setup
Go back to the Converter app and make sure it’s completed the final stage of processing using the “Old AutoCAD Program Reviver” tab
Now reboot your PC and run your AutoCAD as normal
NOTE: When starting AutoCAD, if you see a warning dialog when you run saying “This program has known compatibility issues”, simply click “Don’t show this message again” and then click “Run the Program…”
Troubleshooting
If you are unable to activate your product, or the activation process crashes
Autodesk no longer supply License Activation codes for this version of AutoCAD. The best way is to transfer your existing license to the new PC but there are other options, we document them here
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD LT 2013 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD LT 2013
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
These instructions solve issues around installing/running your old AutoCAD 2011 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD® 2011”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD® 2011. It cannot be installed on 64-bit Windows”
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD 2011 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
IMPORTANT NOTE: Autodesk no longer supply License Activation codes for this version of AutoCAD. The best way is to transfer your existing license to the new PC but there are other options, we document them here
How to install AutoCAD 2011
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, select your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
if you see a dialog stating “An App on your PC needs the following Windows Feature: .NET Framework 3.5 (includes .NET 2.0 and 3.0)” be sure to click “Download and install this feature” as this must be installed in order for the setup to run.
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If your AutoCAD crashes while interacting with the Ribbon click here
If you are unable to activate your product, or the activation process crashes:
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
These instructions solve issues around installing/running your 32bit AutoCAD 2018 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD® 2018”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD® 2018. It cannot be installed on 64-bit Windows”
You can solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD 2018 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD LT 2018
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
These instructions solve issues around installing/running your old AutoCAD 2011 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD LT® 2011”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD LT® 2011. It cannot be installed on 64-bit Windows”
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD LT 2011 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
IMPORTANT NOTE: Autodesk no longer supply License Activation codes for this version of AutoCAD. The best way is to transfer your existing license to the new PC but there are other options, we document them here
How to install AutoCAD LT 2011
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, select your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
if you see a dialog stating “An App on your PC needs the following Windows Feature: .NET Framework 3.5 (includes .NET 2.0 and 3.0)” be sure to click “Download and install this feature” as this must be installed in order for the setup to run.
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If your AutoCAD crashes while interacting with the Ribbon click here
If you are unable to activate your product, or the activation process crashes:
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
These instructions solve issues around installing/running your old AutoCAD 2012 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD Architecture® 2012”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD Architecture® 2012. It cannot be installed on 64-bit Windows”
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD Architecture 2012 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD Architecture 2012
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
if you see a dialog stating “An App on your PC needs the following Windows Feature: .NET Framework 3.5 (includes .NET 2.0 and 3.0)” be sure to click “Download and install this feature” as this must be installed in order for the setup to run.
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If your AutoCAD crashes while interacting with the Ribbon click here
If you are unable to activate your product, or the activation process crashes:
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD 2015 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD 2015
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD LT 2014 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD 2014
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
Follow these instructions to solve issues around installing/running your legacy AutoCAD 2000i on Windows 11
Ransomware Protection Windows 11 and AutoCAD
Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD 2000i
A quick word of advice: please follow the instructions below precisely as documented including using the same folder names and paths. This will significantly reduce the risk of having any problems…
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Longbow Converter tool
Insert your AutoCAD 2000 CD into your CDRom drive
Select the 2nd tab named “Old AutoCAD Installer Reviver“
Using the “…” button, pick your AutoCAD CD
Click “Run Old Installer”
Read and follow all the prompts
Once the AutoCAD setup starts, stop and read the next step…
In the AutoCAD setup program, navigate through each setup dialog as normal, with these exceptions…
When you arrive at the installation folder path setup dialog…
**it’s vitally important to make sure you install to c:\acad2000i (not Program Files (x86)\AutoCAD 2000i which is normally default)**
Once setup completes…
Do not reboot if asked to do so
Make sure to fully close the setup program when the installation is complete.
Back in the Converter app and make sure it’s completed the final stage of processing using the “Old AutoCAD Program Reviver” tab, it should say SUCCESS!
Next, unzip and save the service pack file to c:\Autodesk\sp – do not install yet
Go back into the Converter, select the 3rd tab, select the c:\Autodesk\sp folder and click Fix.
Install the 2000i sp2 by running either the c:\Autodesk\sp\u090_u181p.exe for unlocked or c:\Autodesk\sp\u090_u181p_swl.exe for locked
Once your sp is installed, start the Longbow Converter tool again; we are going to repeat some of the steps from the original installation before. Select the 2nd tab, pick the copy of your AutoCAD 2000i CD on your hard drive which last time was in c:\Autodesk\acad2000i folder, now select the 3rd tab, select the install folder c:\acad2000i now click Fix.
Now, you can happily run your AutoCAD 2000i with sp2 on Windows 10, Windows 7 and Windows 8.
These instructions solve issues around installing/running your 32bit AutoCAD 2016 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD® 2016”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD® 2016. It cannot be installed on 64-bit Windows”
You can solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD 2016 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders – here’s how.
How to install AutoCAD 2016
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
Affecting all versions of AutoCAD and AutoCAD LT 2014, 2015 and 2016
Random shutdown on startup or opening of DWG files. AutoCAD may restart after a few attempts. You see errors like:
Unhandled Exception 4 (Access violation reading 0x0014) at address 70DC63A9h
Additional error texts:
INTERNAL ERROR: Attempt to register class ‘AcViewNavigation’ twice
Error handler re-entered. Exiting now.
Issues are caused by the forced shutdown of AutoCAD components. You can fix the problem using the Longbow Converter App (you need version 12.61 or newer), steps to fix are as follows:
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Longbow Converter tool
Select the 3nd tab named “Old AutoCAD Program Reviver“
Using the “…” button
pick the path to your acad.exe file (or for AutoCAD LT it’s acadlt.exe)
TIP: you can find the path by right-clicking the AutoCAD shortcut, clicking Properties and noting the ‘Target’ property e.g. C:\Program Files\Autodesk\AutoCAD 2016
Click “Fix Old Program”
Now start AutoCAD. problem should now be solved. If not, please contact Longbow Support
Installing Autodesk Mechanical Desktop R4 on Windows 11 is not normally possible, you will run into lots of problems including the error message shown below…
Windows 16bit setup error – This app can’t run on your PC
The following document will walk you through how to install your Autodesk Mechanical Desktop R4 (otherwise known as MDT 4 and built on the AutoCAD 2000 platform) on Windows 11 32bit or 64bit…
Ransomware Protection Windows 11 and AutoCAD
Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD MDT R4 (2000)
A quick word of advice: please follow the instructions below precisely as documented including using the same folder names and paths. This will significantly reduce the risk of having any problems…
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Longbow Converter tool
Insert your AutoCAD CD into your CDRom drive
Select the 2nd tab named “Old AutoCAD Installer Reviver“
Using the “…” button, pick your AutoCAD CD
Click “Run Old Installer”
Read and follow all the prompts
Once the AutoCAD setup starts, stop and read the next step…
In the setup program, navigate through each setup dialog as normal, except when you get to the installation folder, **it’s vitally important to make sure you install to c:\mdt2000(not .\MDT as usually prompted)**
MDT 4 select the Browse button and update path to c:\mdt2000
Now carry on with the install, please read all of the following tips while your installation is running so that you are prepared…
Do not reboot once the install is complete.
Ignore any errors related to not being able to create the shortcut folder “Mechanical Desktop 4”, you will have to create a shortcut on your computer Desktop pointing to your c:\mdt2000\acad.exe by hand.
If you see errors stating errors with objectdbx.z or dao2535.tlb – please reboot your machine and re-do all of the steps above.
Once you click “OK” to setup not being able to create your shortcut folder “Mechanical Desktop 4” – setup may now try to install Acrobat Reader 3.01. If this happens, you will see a blue Mechanical Desktop 4 screen with nothing on it, it will sit there for maybe 60 minutes, just let it do its thing and be patient. Eventually, you will see the Acrobat setup appear, install accepting all defaults.
When the MDT 4 setup asks if you want to “Install the Mechanical Desktop Migration Assistant” say
Once the setup has completed…
Do not reboot if asked to do so
Make sure to fully close the setup program when the installation is complete.
Back in the Converter app and make sure it’s completed the final stage of processing using the “Old AutoCAD Program Reviver” tab and that SUCCESS!! is displayed
Finally, reboot your PC.
Now you are ready to run your AutoCAD, simply run c:\mdt2000\acad.exe using Windows Explorer.
If you find that you are running in raw AutoCAD mode, to enable your Mechanical Desktop features, carry out these next steps, either…
Add a shortcut (recommended) to c:\mdt2000\acad.exe making sure that the Target Property of the shortcut is set to (including quotes) “C:\mdt2000\acad.exe” /p “C:\mdt2000\desktop\desktop.arg” and the Start In Property is set to the same path as the .arg file e.g.
Creating a shortcut to Mechanical R4 making sure the Startin property points to where the .arg file resides
For the Power Packs use a new shortcut with the Target set to either
“C:\mdt2000\acad.exe” /p “C:\mdt2000\acadm\acadmpp.arg” …with both Shortcut Start In: properties set to and the C:\mdt2000\acadm
or update your AutoCAD support path by hand…
At the AutoCAD Command line, type the command ‘Preferences’, add new Support path folders c:\mdt2000\acadm and then also c:\mdt2000\acadm\support, now click ‘Apply’ and then ‘OK’ out of the dialog.
Next, restart AutoCAD.
When you are back in AutoCAD, type ‘Menuload’ at the command line, click browse, then navigate to C:\mdt2000\acadm\support, change the file filter at the bottom to *.mnu, then open acadm.mnu, finally click Load, then pick Close.
Now restart AutoCAD
Now you can happily run your Autodesk Mechanical Desktop 4 – but we do recommend you install the following Service Packs…
Unzip your newly downloaded sp to folder path c:\Autodesk\sp
Start the Converter, select the 2nd tab named “Old AutoCAD Installer Reviver“,
pick the c:\Autodesk\sp\AutoCAD 2000 sp4 folder and click ‘Run Old Installer’
Wait for the setup to appear, it could take up to 45 minutes, then install as normal.
Troubleshooting
If your MDT R4 (AutoCAD 2000) setup is not starting after 45 minutes
try rebooting, then restart the steps above. If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing AutoCAD 2000 from Windows Safe Mode
Plotting – if you are having plotting issues, either
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
Follow these instructions to solve issues around installing/running your legacy AutoCAD LDT 2002 on Windows 11. It requires the purchase of our Longbow Converter App which provides the framework to allow your old AutoCAD to install and run natively on Windows 11.
NOTE: We currently only support US unlocked versions of 2002 on 64bit OS. European or locked US support 2002 is limited only to 32bit Windows 11.
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install Autodesk LDT 2002
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Longbow Converter tool
Select the 2nd tab named “Old AutoCAD Installer Reviver”
Using the “. . .” button, pick your LDT 2002 CD ROM
Now click the “Run Old Installer” button
Next, just follow the Converter’s instructions.
Once the AutoCAD setup starts, stop and read the next step
In the setup program, navigate through each setup dialog as normal, except when you get to the installation folder **it’s vitally important to make sure you install to c:\ldt2002 (not Program Files (x86)\Autodesk Land Desktop 3 as usually prompted by default)**
Now carry on with the install as usual
Do not reboot if asked to do so
Once installed…
Be sure to completely close the setup application
Now go back to the Converter app and make sure it’s completed the final stage of processing using the “Old AutoCAD Program Reviver” tab, it should say “SUCCESS!!”
Finally, reboot your PC and run your AutoCAD as normal
Unzip the sp1 into a folder called c:\Autodesk\LDT3 sp1
Next, start the Converter, select the 3rd tab “Old AutoCAD Program Reviver” select the c:\Autodesk\LDT3 sp1 folder, then click Fix.
If asked if this is a service pack by the Converter tool, say yes.
Now run the sp1 as you need from Windows Explorer.
Repeat for sp2
Installing Civil Design 3
Using the Longbow Converter solution, you can also install the Civil Design add-on to LDT 3.
Using Windows Explorer, copy your entire Civil Design 3 CD to your hard drive, to a folder path c:\Autodesk\ldt2002 – Civil Design 3
Start the Longbow Converter tool, select the 2nd tab, pick the c:\Autodesk\ldt2002 – Civil Design 3 folder, and click Run. Read and understand all the prompts before pressing OK. Once the setup starts, stop and read the next step…
In the setup program, navigate through each setup dialog as normal
Now your Civil Design 3 is up and running with LDT.
Installing Survey 3
Using the Longbow Converter solution, you can also install the Survey add-on to LDT 3.
Using Windows Explorer, copy your entire Survey 3 CD to your hard drive, to a folder path c:\Autodesk\ldt2002 – Survey 3
Start the Longbow Converter tool, select the 2nd tab, pick the c:\Autodesk\ldt2002 – Survey 3 folder, and click Run. Read and understand all the prompts before pressing OK. Once the setup starts, stop and read the next step…
In the setup program, navigate through each setup dialog as normal
Now your Survey 3 is up and running with LDT.
Installing Raster Design 3
Using the Longbow Converter solution, you can also install the Raster Design add-on to LDT 3.
Using Windows Explorer, copy your entire Survey 3 CD to your hard drive, to a folder path c:\Autodesk\ldt2002 – Raster Design 3
Start the Longbow Converter tool, select the 2nd tab, pick the c:\Autodesk\ldt2002 – Raster Design 3 folder, and click Run. Read and understand all the prompts before pressing OK. Once the setup starts, stop and read the next step…
In the setup program, navigate through each setup dialog as normal
Now your Raster Design 3 is up and running with LDT.
Troubleshooting
– If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
As an existing AutoCAD Architectural Desktop (ADT R14) User, you most likely cannot do without your beloved AutoCAD ADT. With the latest hardware and required move to new Windows versions, trying to install your AutoCAD gives an error like this one…
Windows 16bit setup error – This app can’t run on your PC
or
“FATAL ERROR: HEAP ERROR”
or
MEM_BAD_POINTER
…all is not lost, follow these instructions to install your ADT R14 on Windows 11…
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD ADT R14
A quick word of advice: please follow the instructions below precisely as documented including using the same folder names and paths. This will significantly reduce the risk of having any problems…
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\adtR14 (not Program Files\AutoCAD Architectural Desktop as usually prompted)**
Once your AutoCAD setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the newly installed program files for you automatically (inside folder c:\adtR14). You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
navigate through each setup dialog as normal, with these exceptions…
Make sure you do a Typical Install (not a Full Install)
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\adtR14 (not Program Files\AutoCAD Architectural Desktop as usually prompted)**
Now carry on with the install
Do not reboot once the install is complete
Ignore any errors related to not being able to create the shortcut e.g. “Cannot Create folder ‘AutoCAD Architectural Desktop’“, you will have to create a shortcut on your computer Desktop to your c:\adtR14\acad.exe by hand.
Again, do not reboot if prompted to do so
Once your AutoCAD setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the newly installed program files for you automatically (inside folder c:\adtR14). You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
navigate through each setup dialog as normal, with these exceptions…
Make sure you do a Typical Install (not a Full Install)
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\adtR14 (not Program Files\AutoCAD Architectural Desktop as usually prompted)**
Now carry on with the install
Do not reboot once the install is complete
Ignore any errors related to not being able to create the shortcut e.g. “Cannot Create folder ‘AutoCAD Architectural Desktop’“, you will have to create a shortcut on your computer Desktop to your c:\adtR14\acad.exe by hand.
Again, do not reboot if prompted to do so
Once your AutoCAD setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the newly installed program files for you automatically (inside folder c:\adtR14). You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
navigate through each setup dialog as normal, with these exceptions…
Make sure you do a Typical Install (not a Full Install)
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\adtR14 (not Program Files\AutoCAD Architectural Desktop as usually prompted)**
Now carry on with the install
Do not reboot once the install is complete
Ignore any errors related to not being able to create the shortcut e.g. “Cannot Create folder ‘AutoCAD Architectural Desktop’“, you will have to create a shortcut on your computer Desktop to your c:\adtR14\acad.exe by hand.
Again, do not reboot if prompted to do so
Once your AutoCAD setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the newly installed program files for you automatically (inside folder c:\adtR14). You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
navigate through each setup dialog as normal, with these exceptions…
Make sure you do a Typical Install (not a Full Install)
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\adtR14 (not Program Files\AutoCAD Architectural Desktop as usually prompted)**
Now carry on with the install
Do not reboot once the install is complete
Ignore any errors related to not being able to create the shortcut e.g. “Cannot Create folder ‘AutoCAD Architectural Desktop’“, you will have to create a shortcut on your computer Desktop to your c:\adtR14\acad.exe by hand.
Again, do not reboot if prompted to do so
Once your AutoCAD setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the newly installed program files for you automatically (inside folder c:\adtR14). You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Once installed, start the Longbow Converter App…
Now place your AutoCAD ADT R14 CD in the CDRom Drive
In the Converter App, select the 2nd tab named “Old AutoCAD Installer Reviver“
Using the “. . .” button, select your AutoCAD installation CD
Next, click the “Run Old Installer” button and follow the onscreen instructions. If all is well a dialog will appear stating success, simply click OK to start your AutoCAD setup
Now I know it’s unheard of these days, but at this point expect to wait up to 45 minutes for your AutoCAD setup.exe program to appear, be patient – NOTE: do not continue with the install until reading the next step…
Once the setup starts, stop and read the next steps all the way to the end! By the way, if your AutoCAD ADT R14 setup does not start after 45 minutes, read the Troubleshooting section below.
In the AutoCAD setup program…
navigate through each setup dialog as normal, with these exceptions…
Make sure you do a Typical Install (not a Full Install)
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\adtR14 (not Program Files\AutoCAD Architectural Desktop as usually prompted)**
Now carry on with the install
Do not reboot once the install is complete
Ignore any errors related to not being able to create the shortcut e.g. “Cannot Create folder ‘AutoCAD Architectural Desktop’“, you will have to create a shortcut on your computer Desktop to your c:\adtR14\acad.exe by hand.
Again, do not reboot if prompted to do so
Once your AutoCAD setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the newly installed program files for you automatically (inside folder c:\adtR14). You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
If you don’t yet have a copy of the Longbow Converter App you can purchase it hereor click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Once installed, start the Longbow Converter App…
Now place your AutoCAD ADT R14 CD in the CDRom Drive
In the Converter App, select the 2nd tab named “Old AutoCAD Installer Reviver“
Using the “. . .” button, select your AutoCAD installation CD
Next, click the “Run Old Installer” button and follow the onscreen instructions. If all is well a dialog will appear stating success, simply click OK to start your AutoCAD setup
Now I know it’s unheard of these days, but at this point expect to wait up to 45 minutes for your AutoCAD setup.exe program to appear, be patient – NOTE: do not continue with the install until reading the next step…
Once the setup starts, stop and read the next steps all the way to the end! By the way, if your AutoCAD ADT R14 setup does not start after 45 minutes, read the Troubleshooting section below.
In the AutoCAD setup program…
navigate through each setup dialog as normal, with these exceptions…
Make sure you do a Typical Install (not a Full Install)
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\adtR14 (not Program Files\AutoCAD Architectural Desktop as usually prompted)**
Now carry on with the install
Do not reboot once the install is complete
Ignore any errors related to not being able to create the shortcut e.g. “Cannot Create folder ‘AutoCAD Architectural Desktop’“, you will have to create a shortcut on your computer Desktop to your c:\adtR14\acad.exe by hand.
Again, do not reboot if prompted to do so
Once your AutoCAD setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the newly installed program files for you automatically (inside folder c:\adtR14). You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
Once rebooted, you can now run your AutoCAD ADT R14, using Windows Explorer, navigate to c:\adtR14 and double click acad.exe (we recommend creating a Desktop shortcut for easy access)
Troubleshooting
If your AutoCAD setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing R14 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD R14 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadR14 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadr14
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
The issue is that you are running 64bit AutoCAD LT 2014 on Windows 11, this is an old version of AutoCAD which is easily affected by Windows Updates pushed by Microsoft. You need to install the 32bit version of AutoCAD LT 2014 instead as it is not as easily affected by the latest Windows components. To solve the problem, you must first uninstall your existing AutoCAD LT 2014 (do not install along side as it will not work) and then follow these instructions to install the 32bit version (which is much more reliable and actually runs faster)
These instructions solve issues around installing/running your 32bit AutoCAD 2019 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD® 2019”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD® 2019. It cannot be installed on 64-bit Windows”
You can solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD 2019 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD LT 2019
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD LT 2014 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD LT 2014
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
Follow these instructions to solve issues around installing/running your legacy AutoCAD 2002 on Windows 11
Ransomware Protection Windows 11 and AutoCAD
Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD 2002
A quick word of advice: please follow the instructions below precisely as documented including using the same folder names and paths. This will significantly reduce the risk of having any problems…
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Longbow Converter tool
Insert your AutoCAD 2002 CD into your CDRom drive
Select the 2nd tab named “Old AutoCAD Installer Reviver“
Using the “…” button, pick your AutoCAD CD
Click “Run Old Installer”
Read and follow all the prompts
Once the AutoCAD setup starts, stop and read the next step…
In the AutoCAD setup program, navigate through each setup dialog as normal, with these exceptions…
When you arrive at the installation folder path setup dialog…
**it’s vitally important to make sure you install to c:\acad2002 (not Program Files (x86)\AutoCAD 2002 which is normally default)**
Once setup completes…
Do not reboot if asked to do so
Make sure to fully close the setup program when the installation is complete.
Back in the Converter app and make sure it’s completed the final stage of processing using the “Old AutoCAD Program Reviver” tab, it should say SUCCESS!
Finally, reboot your PC and run your AutoCAD and once registered, exit AutoCAD and continue to the next step.
AutoCAD LT98 users are very used to the software package and cannot do without it. With the latest hardware and required move to new Windows versions, trying to install your AutoCAD LT98 gives an error like this one…
“This app can’t run on your PC”
or this one…
“Wrong OS, AutoCAD supports Windows NT 4.0, Windows NT 5.0, Windows 95 and Windows 98”
…all is not lost, follow these instructions to install your AutoCAD LT98 on Windows 11…
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD LT 98
A quick word of advice: please follow the instructions below precisely as documented including using the same folder names and paths. This will significantly reduce the risk of having any
problems…
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Once installed, start the Longbow Converter App…
Now place your AutoCAD LT98 CD in the CDRom Drive
In the Converter App, select the 2nd tab named “Old AutoCAD Installer Reviver“
Using the “. . .” button, select your AutoCAD LT98 installation CD
Next, click the “Run Old Installer” button and follow the onscreen instructions. If all is well a dialog will appear stating success, simply click OK to start your AutoCAD setup
Now I know it’s unheard of these days, but at this point expect to wait up to 45 minutes for your AutoCAD LT98 setup.exe program to appear, be patient – NOTE: do not continue with the install until reading the next step…
Once the setup starts, stop and read the next steps all the way to the end! By the way, if your AutoCAD LT98 setup does not start after 45 minutes, read the Troubleshooting section below.
In the AutoCAD setup program…
navigate through each setup dialog as normal, with these exceptions…
Make sure you do a Typical Install (not a Full Install)
When you get to the installation folder input dialog **it’s vitally important to make sure you install to c:\acadlt98 (not Program Files\AutoCADLT98 as usually prompted)**
Now carry on with the install
Do not reboot once the install is complete
Ignore any errors related to not being able to create the shortcut e.g. “Cannot Create folder ‘AutoCAD LT98’“, you will have to create a shortcut on your computer Desktop to your c:\acadlt98\acad.exe by hand.
Again, do not reboot if prompted to do so
Once your AutoCAD LT98 setup has completed the installation…
Make sure you fully close the setup program.
Once the setup is closed the Converter will automatically fix the c:\acadlt98 program files. You should see “Success!” displayed in the 3rd tab named “Old AutoCAD Program Reviver“
Now reboot your PC
You can now run your AutoCAD LT98 as normal, using Windows Explorer, navigate to c:\acadlt98 and double click aclt.exe
Troubleshooting
If your AutoCAD LT98 setup is not starting after 45 minutes…
First try turning off UAC, rebooting, then restart the steps above.
If it is still failing, most likely it’s because of another application on your system which is preventing our setup routine from starting (perhaps anti-virus, or similar) – try installing LT98 from Windows Safe Mode
If you are getting either a Bad Mem Pointer error and or a Smartheap handler recursively re-entered error when you start your AutoCAD LT98 then you need to re-run all the steps above, taking care to do each step precisely as it says, most likely you are missing from step 5 or you have not installed to c:\acadlt98 as stated in step (7) above.
When starting AutoCAD, if you receive an ‘acad.exe – System Error’ message: The program can’t start because ac1st15.dll is missing from your computer. Try reinstalling the program to fix this problem. If you carried out step (7) above, then try rebooting your PC
Using the “…” button, pick your acad.exe folder e.g. c:\acadlt98
Click “Fix Old Program” and follow prompts
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
Follow these instructions to solve issues around installing/running your legacy AutoCAD LDT 2004 on Windows 11. It requires the purchase of our Longbow Converter App which provides the framework to allow your old AutoCAD to install and run natively on Windows 11.
NOTE: We currently only support US unlocked versions of 2004 on 64bit OS. European or locked US support 2004 is limited only to 32bit Windows 11.
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install Autodesk LDT 2004
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Longbow Converter tool
Insert your AutoCAD CD into your CDRom drive
Select the 2nd tab named “Old AutoCAD Installer Reviver“
Using the “…” button, path the to your AutoCAD CD
Click “Run Old Installer”
Read and follow all the prompts
Once the AutoCAD setup starts, stop and read the next step…
In the AutoCAD setup program, navigate through each setup dialog as normal, with these exceptions…
Some problem NOTES to read before stepping through the setup:
if you cannot move past the first screen in the setup, see Trouble Shooting below
When you click the Install link from your AutoCAD setup you may see a dialog box appear saying – “This program has compatibility issues” – simply check the “Don’t show this message again” and then click the “Run the program without getting help”.
Now onto the setup…
When you arrive at the installation folder path setup dialog…
**it’s vitally important to make sure you install to c:\ldt2004 (not Program Files (x86)\Autodesk Land Desktop 2004)**.
While installing…
If you see an error in install “.NET Runtime Optimization Service has stopped working” – simply ignore by clicking the “Close Program” button
Do not reboot if asked to do so
Once installed
Do not reboot if asked to do so
Make sure to fully close the setup program when the installation is complete.
Back in the Converter app and make sure it’s completed the final stage of processing using the “Old AutoCAD Program Reviver” tab
Finally, reboot your PC and run your AutoCAD as normal
NOTE: When starting AutoCAD, if you see a warning dialog when you run saying “This program has known compatibility issues”
Click “Don’t show this message again”
then click “Run the Program…”
Installing Civil Design 4
Using the Longbow Converter solution, you can also install the Civil Design add-on to LDT.
Using Windows Explorer, copy your entire Civil Design 4 CD to your hard drive, to a folder path c:\Autodesk\ldt2004 – Civil Design 4
Start the Longbow Converter tool, select the 2nd tab, pick the c:\Autodesk\ldt2004 – Civil Design 4 folder, and click Run.
The Converter will ask if this is a normal application CD, it is not, it’s a plugin CD so click ‘No’
Input Civil 2004 and click OK
Read and understand all the prompts before pressing OK.
In the setup program, navigate through each setup dialog as normal
Now your Civil Design is up and running with LDT.
Installing Survey 4
Using the Longbow Converter solution, you can also install the Survey add-on to LDT.
Using Windows Explorer, copy your entire Survey 4 CD to your hard drive, to a folder path c:\Autodesk\ldt2002 – Survey 4
Start the Longbow Converter tool, select the 2nd tab, pick the c:\Autodesk\ldt2002 – Survey 4folder, and click Run.
The Converter will ask if this is a normal application CD, it is not, it’s a plugin CD so click ‘No’
Input Survey 2004 and click OK
Read and understand all the prompts before pressing OK.
In the setup program, navigate through each setup dialog as normal
Now your Survey is up and running with LDT.
Installing Raster Design 3
Using the Longbow Converter solution, you can also install the Raster Design add-on to LDT.
Using Windows Explorer, copy your entire Raster Design 4 CD to your hard drive, to a folder path c:\Autodesk\ldt2002 – Raster Design 4
Start the Longbow Converter tool, select the 2nd tab, pick the c:\Autodesk\ldt2002 – Raster Design 4 folder, and click Run.
The Converter will ask if this is a normal application CD, it is not, it’s a plugin CD so click ‘No’
Input Plugin 2004 and click OK
Read and understand all the prompts before pressing OK.
In the setup program, navigate through each setup dialog as normal
Now your Raster Design is up and running with LDT.
Installing Autodesk LDT 2004 Sp2
The LDT 2004 sp2 is optional, most users don’t need it but in case you do…
– If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
These instructions solve issues around installing/running your old AutoCAD 2010 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD® 2010”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD® 2010. It cannot be installed on 64-bit Windows”
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD 2010 installation so that you can be up and running again… Simply follow the instructions below:
IMPORTANT NOTE: Autodesk no longer supply License Activation codes for this version of AutoCAD. The best way is to transfer your existing license to the new PC but there are other options, we document them here
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD 2010
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
if you see a dialog stating “An App on your PC needs the following Windows Feature: .NET Framework 3.5 (includes .NET 2.0 and 3.0)” be sure to click “Download and install this feature” as this must be installed in order for the setup to run.
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Installing AutoCAD 2010 Service Packs
We recommend that you download and install the latest Service Packs from Autodesk which can be found here
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
If you are running AutoCAD LT 2016 on Windows 11 and you receive this error…
The issue is that you are running 64bit AutoCAD LT 2016 on Windows 11, this is an old version of AutoCAD which is easily affected by Windows Updates pushed by Microsoft. You need to install the 32bit version of AutoCAD LT 2016 instead as it is not as easily affected by the latest Windows components. To solve the problem, you must first uninstall your existing AutoCAD LT 2016 (do not install along side as it will not work) and then follow these instructions to install the 32bit version (which is much more reliable and actually runs faster)
These instructions solve issues around installing/running your 32bit AutoCAD 2016 on 64bit Windows 11. Some common issues are error messages like these
“This operating system is not supported by AutoCAD LT® 2016”
“You cannot install this product on the current operating system”
“You are attempting to use a 32-bit installer on a 64-bit operating system”
“This is a 32-bit AutoCAD LT® 2016. It cannot be installed on 64-bit Windows”
You can solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD LT 2016 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders – here’s how.
How to install AutoCAD LT 2016
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
The issue is that you are running 64bit AutoCAD LT 2015 on Windows 11, this is an old version of AutoCAD which is easily affected by Windows Updates pushed by Microsoft. You need to install the 32bit version of AutoCAD LT 2015 instead as it is not as easily affected by the latest Windows components. To solve the problem, you must first uninstall your existing AutoCAD LT 2015 (do not install along side as it will not work) and then follow these instructions to install the 32bit version (which is much more reliable and actually runs faster)
You can automatically solve these problems using our Longbow Converter App, it fixes and manages the AutoCAD LT 2015 installation so that you can be up and running again… Follow these instructions:
Ransomware Protection Windows 11 and AutoCAD
Just before we start note that Windows 11 comes with a Ransomware Protection which includes Controlled Folder Access. Controlled folder access blocks applications from writing to your Documents, Pictures, Videos, Music, Public and Favorites folders. AutoCAD versions all the way to AutoCAD 2021 write to certain user Public folders and are therefore blocked by this feature. This can cause issues with all sorts of things including activating your AutoCAD license and even running AutoCAD. Ransomware Protection is an important feature of Windows 11 but it will affect your AutoCAD unless you allow AutoCAD and its dependent applications access to the controlled folders.
How to install AutoCAD LT 2015
If you don’t yet have a copy of the Longbow Converter App you can purchase it here or click on the download link we sent you via email in order to download the Converter App to your PC.
Before installing the Converter App, make sure the files downloaded from our site are not blocked by Windows SmartScreen… Windows 11 is finicky, click the TLC zip first to make sure it’s fully selected then Right+click the file and select Properties. Be sure to check the Unblock checkbox as shown below and Click OK…
Double click the zip file to open it and install the TLC application as normal. By the way, TLC stands for The Longbow Converter
Obtain your purchased copy of the Longbow Converter here
Start the Converter App and note the user interface
Select the 1st tab named “AutoCAD 32bit Installer Converter“
Using the “. . .” button, selection your AutoCAD installation CD
Next, click the “Convert“ button and follow instructions
Once the conversion process is complete
click Install/Run Setup to start setup
Simply install as normal, remembering to…
Close the setup program when the installation is complete.
Back in the Converter app and make sure it has completed the final stage of processing using the “Old AutoCAD Program Reviver” tab – it should be green stating “SUCCESS”
Now run your AutoCAD as normal
Troubleshooting
If you have crashing problems using the File->Open or File->Save dialogs inside of AutoCAD please read this blog entry on the File->Open or File->Save Crash in AutoCAD
