Error 0x80045068

Value: -2147200920 | 0x80045068 | 2147766376

What does it mean ?

The current voice is not a prompt voice, so the ISpPromptVoice functions don't work.
Value: 20584 | 0x5068 | 0b0101000001101000

Where does it come from ?

COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

Other Errors for FACILITY_ITF