Installing AutoCAD 2005 LT on Windows 7, Windows 8, Windows 8.1 or Windows 10 32bit or 64bit can be very easily defined in these short steps…
NOTE: These steps do not bypass normal Autodesk licensing/authorization, you should expect to use your own serial numbers in the normal way.
- Obtain your copy of the Longbow Converter here (we recommend the latest version for LT 2005)
- Copy your AutoCAD 2005 LT CD to your hard drive, to a folder path c:\Autodesk\acadlt2005
- Start the Longbow Converter tool
- select the 2nd tab named “Old AutoCAD Installer Reviver“
- pick the c:\Autodesk\acadlt2005 folder
- click Run.
- Read and understand all the prompts before pressing OK.
- Once the setup starts, stop and read the next step…
- In your LT 2005 setup program…
- If you see a dialog titled “64-bit .NET Unavailable” – simply ignore it and click OK
- Now, 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:\acadlt2005 (not Program Files (x86)\AutoCAD LT 2005**
- If you see an error in install “.NET Runtime Optimization Service has stopped working” – simply ignore by clicking the “Close Program” button
- Once installed
- go back to the Converter tool
- select the 3rd tab named “Old AutoCAD Program Reviver”
- pick the newly installed c:\acadlt2005 folder
- click Fix.
- Now you can run your AutoCAD LT 2005, but it’s a good idea to install the latest service packs.
- NOTE: 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…“
- Download the AutoCAD 2005 LT Sp1 (locked) from our good friends at CADStudio (as Autodesk no longer post older sp’s)
- Copy the ACLT2005sp1SWL.exe to folder path c:\Autodesk\sp
- Start the Converter, select the 3rd tab, pick the c:\Autodesk\sp folder and click Fix.
- Now run the ACLT2005sp1SWL.exe from Windows explorer
- NOTE: If your AutoCAD fails to start, you may now need to again re-run the Converter process from step (6) above
– If you are unable to activate your product, or the activation crashes:
- Try uninstalling the July 2014 Microsoft security update
- Try downgrading your Internet Explorer (IE) from version 11 to version 10 by following the instructions detailed here
- If all else fails, call Autodesk – they can authorize your software for you; you will need to give them proof of purchase, your serial number and request code.
– 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