Errors Caused by Hardware Changes
License Errors
Errors Caused by Reinstalling an Operating System
If you make any changes to files in your license folder, you might receive a license error. You won't be able to use your product.
Your license files are installed in the following location:
C:\Documents and Settings\All Users\Application Data\Autodesk\Software Licenses
To prevent a license error due to a change in a license file, do not alter your license files.
If you altered your license files and your license failed, you must reactivate your product. See Register and Activate an Autodesk Product.