Error 0x80040506

Value: -2147220218 | 0x80040506 | 2147747078

What does it mean ?

COLL_E_BADRESULT  
The result row is corrupted.
Value: 1286 | 0x0506 | 0b0000010100000110
TF_E_ALREADY_EXISTS  
The preserved key is registered.
Value: 1286 | 0x0506 | 0b0000010100000110

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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