Error 0x80EE0011

Value: -2131886063 | 0x80EE0011 | 2163081233

What does it mean ?

RTC_E_SIP_AUTH_FAILED  
Authentication Failed
Value: 17 | 0x0011 | 0b0000000000010001

Where does it come from ?

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

StackOverflow

Other Errors for FACILITY_RTC_INTERFACE