What does BSOD 191 (MUTEX_ALREADY_OWNED) mean?

 
Could be also:
ConstantTypeOS
ERROR_INVALID_EXE_SIGNATUREWin32 errorWindows
STATUS_ABANDONED_WAIT_63NTSTATUSWindows

MUTEX_ALREADY_OWNED

The MUTEX_ALREADY_OWNED bug check has a value of 0x000000BF. This indicates that a thread attempted to acquire ownership of a mutex it already owned.

Important

This topic is for programmers. If you are a customer who has received a blue screen error code while using your computer, see Troubleshoot blue screen errors.

MUTEX_ALREADY_OWNED Parameters

Parameter Description

1

The address of the mutex

2

The thread that caused the error

3

0

4

Reserved


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