Error 0x80043640

Value: -2147207616 | 0x80043640 | 2147759680

What does it mean ?

FTE_E_UPGRADE_INTERFACE_ALREADY_INSTANTIATED  
The upgrade interface has already been instantiated. Only one instance of the upgrade interface is allowed.
Value: 13888 | 0x3640 | 0b0011011001000000

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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