Error 0x80040004

Value: -2147221500 | 0x80040004 | 2147745796

What does it mean ?

OLE_E_NOCONNECTION  
There is no connection for this connection ID
Value: 4 | 0x0004 | 0b0000000000000100
TAPI_E_INVALIDMEDIATYPE  
The MEDIATYPE passed in to this method was invalid.
Value: 4 | 0x0004 | 0b0000000000000100

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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Other Errors for FACILITY_ITF