Error 0x800401F1

Value: -2147221007 | 0x800401F1 | 2147746289

What does it mean ?

CO_E_ALREADYINITIALIZED  
CoInitialize has already been called.
Value: 497 | 0x01F1 | 0b0000000111110001

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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