Error 0x80EE007E

Value: -2131885954 | 0x80EE007E | 2163081342

What does it mean ?

RTC_E_UDP_NOT_SUPPORTED  
This feature is not supported when one of the server in profile has UDP transport
Value: 126 | 0x007E | 0b0000000001111110

Where does it come from ?

FACILITY_RTC_INTERFACE  
RTC - Real-time Communications
Value: 238 | 0x0EE | 0b11101110

Other Errors for FACILITY_RTC_INTERFACE