Error 0x8007021D

Value: -2147024355 | 0x8007021D | 2147942941

What does it mean ?

ERROR_TIMER_NOT_CANCELED  
An attempt was made to cancel or set a timer that has an associated APC and the subject thread is not the thread that originally set the timer with an associated APC routine.
Value: 541 | 0x021D | 0b0000001000011101

Where does it come from ?

FACILITY_WIN32  
Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

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