Error 0x8004537A

Value: -2147200134 | 0x8004537A | 2147767162

What does it mean ?

FSRM_E_FILE_IN_USE  
The file is being used by another application and cannot be accessed at this time.
Value: 21370 | 0x537A | 0b0101001101111010

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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