Error 0x80040E52

Value: -2147217838 | 0x80040E52 | 2147749458

What does it mean ?

DB_E_ALREADYINITIALIZED  
Data source object is already initialized.
Value: 3666 | 0x0E52 | 0b0000111001010010

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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