FATAL ERROR: Unhandled Access Violation Reading 0x0000 Exception at ef86cfch + Desktop Subscription Licenses
Autodesk Education Master Suite 2014 + CAD Manager Tools

Your License is no longer available.

We had few reports regarding 2014 version of Autodesk products unable regain license after timeout.

User gets following error after certain period of inactivity. If the user restarts the application the licensing would work normally.

This issue is related local borrow cache in the registry, which is not deleted on expiry of borrowed license. If users return borrowed licenses earlier than the expiry date/time (Midnight) this error will not occur.


  • Return the borrowed license prior to the expiry date/time (Midnight)
  • Delete the following registry key if the borrowed license has expired automatically.

[HKEY_CURRENT_USER\Software\FLEXlm License Manager\Borrow]


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