Error 0x8004180A

Value: -2147215350 | 0x8004180A | 2147751946

What does it mean ?

CI_E_ALREADY_INITIALIZED  
The object is already initialzed.
Value: 6154 | 0x180A | 0b0001100000001010

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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