Issue:

This error typically occurs during the activation of Autodesk software (e.g., Autodesk 3ds Max) using a keygen.

Steps to Resolve

1. Verify Administrator Privileges: Ensure that the activation keygen is launched and run with administrator privileges.
2. Clear License Information using deepuninstaller: If the error persists even after running the keygen as an administrator, proceed with clearing existing license information:
   • Launch deepuninstaller.
   • Navigate to the extended options within the deepuninstaller application.
   • Execute the ‘Autodesk license file cleanup’ function.
   • Note: This process will erase all activation details for every version of Autodesk software installed on your system. Consequently, all Autodesk products will require re-activation after this cleanup.