Error 0x80040E5E

Value: -2147217826 | 0x80040E5E | 2147749470

What does it mean ?

DB_E_MULTIPLESTORAGE  
Multiple storage objects cannot be open simultaneously.
Value: 3678 | 0x0E5E | 0b0000111001011110

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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