How to Recover an AutoCAD License File

Like most software programs, AutoCAD, the 3D engineering modeling program by AutoDesk, requires a unique license key to activate it. If you can't find your license serial number, you may be able to find it in the Windows Registry. This will only work, however, if you did not delete the Registry information during an uninstall process.

Designer focusing on his work on the computer
Finding a key does not require editing the Windows Registry.
credit: Ciaran Griffin/Lifesize/Getty Images

Step

Open the Registry Editor by typing "regedit" in the Windows 8 Search charm and selecting "regedit" from the Apps section of the search results.

Step

Navigate to the "HKEY_LOCAL_MACHINE\Software\Autodesk\AutoCAD\R15.0\ACAD-1:405\AdLM\Type" registry key.

Step

Right-click on the registry key and click "Export."

Step

Choose a name to save the license registry key file as, along with a location where you want to save it, and then click the "Save" button.