Error 0x80040037

Value: -2147221449 | 0x80040037 | 2147745847

What does it mean ?

TAPI_E_REQUESTFAILED  
The request failed for unspecified reasons.
Value: 55 | 0x0037 | 0b0000000000110111

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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