The most reliable way to clear this error is to manually uninstall and then update the licensing component:
Disable settings in the Windows Control Panel. internal error 2602 autocad
If you have ever been in the middle of a critical deadline and suddenly seen the message: "Internal Error 2602. \nUnhandled Access Violation Reading 0x0000 Exception at 7bc3a98h" – you know the panic. This error typically causes an immediate crash, loss of unsaved work, and corruption of your drawing file. The most reliable way to clear this error
Many users report Error 2602 occurs immediately after using the command. This is a classic symptom. loss of unsaved work