Error 0x803D001F

Value: -2143485921 | 0x803D001F | 2151481375

What does it mean ?

WS_E_SERVER_REQUIRES_NEGOTIATE_AUTH  
The remote endpoint requires HTTP authentication scheme 'negotiate'.
Value: 31 | 0x001F | 0b0000000000011111

Where does it come from ?

FACILITY_WEBSERVICES  
Web Services
Value: 61 | 0x03D | 0b00111101

Other Errors for FACILITY_WEBSERVICES