Error 0x800400FF

Value: -2147221249 | 0x800400FF | 2147746047

What does it mean ?

OLE_E_LAST  
Value: 255 | 0x00FF | 0b0000000011111111

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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