Error 0x803D0020

Value: -2143485920 | 0x803D0020 | 2151481376

What does it mean ?

WS_E_INVALID_ENDPOINT_URL  
The endpoint address URL is invalid.
Value: 32 | 0x0020 | 0b0000000000100000

Where does it come from ?

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

Other Errors for FACILITY_WEBSERVICES