Error 0x80020006

Value: -2147352570 | 0x80020006 | 2147614726

What does it mean ?

DISP_E_UNKNOWNNAME  
Unknown name.
Value: 6 | 0x0006 | 0b0000000000000110

Where does it come from ?

FACILITY_DISPATCH  
COM Dispatch (IDispatch interface)
Value: 2 | 0x002 | 0b00000010

Other Errors for FACILITY_DISPATCH