1. Obtain your copy of the Longbow Converter here
2. If you have CDs:
   1. Using Windows Explorer, copy Disk 1 of your Civil 3D 2012 CD to your hard drive, to a folder path c:\Autodesk\Civil3d2012
   2. Next, copy Disk 2 of your Civil 3D CD directly over the top of Disk 1, overwrite all files in your previously copied c:\Autodesk\Civil3d2012 folder
   3. Same again for Disk 3
3. If you have a single self extracting exe downloaded from Autodesk
   1. Run the exe, it will ask to unzip to a folder inside of c:\Autodesk, make a note of the folder for later use (we’ll refer to it from here as c:\Autodesk\Civil3d2012), now click OK. Wait until all of the files have extracted, when they do, the Civil 3D 2012 setup will automatically launch – simply close it and move to the next step.
4. Now, start the Longbow Converter tool, select the 1st tab named “AutoCAD 32bit Installer Converter”
   1. Next, using the ‘…‘ button select the newly created c:\Autodesk\civil3d2012 folder, and click the ‘Convert‘ button.
      1. If the Converter complains that this is not a 32bit installer, make sure you select the folder which contains the setup.exe and the setup.ini files in the root of the installation media
5. Once the conversion process is complete, click Install/Run Setup to start setup. Simply install as normal.
6. Windows 8, Windows 8.1 and Windows 10 users: Once the installation process is complete, go back to the Converter, select the 3rd tab, pick the newly installed C:\Program Files (x86)\AutoCAD Civil3d 2012 folder, then click Fix.
7. Now you can happily run your Civil 3D 2012 32bit on Windows 10, Windows 7 and Windows 8 64bit.

Installing the 32bit Civil 3D Service Packs

We recommend that you download and install the latest Service Packs from Autodesk which can be found here –

• AutoCAD Civil 3D 2012 Update 1 
• Install the 2012 Ribbon Hotfix – install as normal
• AutoCAD Civil 3D 2012 Update 2.1
• AutoCAD Civil 3D 2012 Update 3
• AutoCAD Civil 3D 2012 Update 4