Error 0x800706C1

Value: -2147023167 | 0x800706C1 | 2147944129

What does it mean ?

RPC_S_PROXY_ACCESS_DENIED  
Access to the HTTP proxy is denied.
Value: 1729 | 0x06C1 | 0b0000011011000001

Where does it come from ?

FACILITY_WIN32  
Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

Other Errors for FACILITY_WIN32