Error 0x8004003F

Value: -2147221441 | 0x8004003F | 2147745855

What does it mean ?

TAPI_E_NOTERMINALSELECTED  
The operation could not be performed because it requires terminals to be selected.
Value: 63 | 0x003F | 0b0000000000111111

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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