Error 0x80040038

Value: -2147221448 | 0x80040038 | 2147745848

What does it mean ?

TAPI_E_REQUESTCANCELLED  
The request was cancelled.
Value: 56 | 0x0038 | 0b0000000000111000
IO_WARNING_ALLOCATION_FAILED  
The driver failed to allocate memory.
Value: 56 | 0x0038 | 0b0000000000111000

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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Other Errors for FACILITY_ITF