Error code
Windows ERROR_NOT_OWNER
WINDOWSERROR_NOT_OWNER
System Error Code· A POSIX/system errno returned when a system call fails.
What it means
Attempt to release mutex not owned by caller..
How to fix it
- Release the mutex only from the thread that acquired it.
- review synchronization logic for mismatched acquire and release.
- update the application if this is a vendor defect.
- restart the application to clear the bad state.
Not affiliated with Windows. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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