Error 0x8004004D

Value: -2147221427 | 0x8004004D | 2147745869

What does it mean ?

TAPI_E_REGISTRY_SETTING_CORRUPT  
Registry Setting is Corrupt.
Value: 77 | 0x004D | 0b0000000001001101

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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