Error 0x803D0016

Value: -2143485930 | 0x803D0016 | 2151481366

What does it mean ?

WS_E_PROXY_ACCESS_DENIED  
Access was denied by the HTTP proxy server.
Value: 22 | 0x0016 | 0b0000000000010110

Where does it come from ?

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

Other Errors for FACILITY_WEBSERVICES