What does HRESULT 0x80072F85 (WININET_E_PROXY_SERVER_UNREACHABLE) mean?

 
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WININET_E_SERVER_UNREACHABLE WININET_E_BAD_AUTO_PROXY_SCRIPT

WININET_E_PROXY_SERVER_UNREACHABLE

WININET_E_PROXY_SERVER_UNREACHABLE is a WinINet HRESULT. It means that WinINet could not connect to the proxy required for the request. The proxy address, route, DNS result, port, authentication gateway or proxy availability can be at fault.

What to check

  • Verify proxy host, port, automatic-configuration result and bypass rules for the affected user profile.
  • Test the proxy endpoint itself from the same machine and network segment.
  • Do not bypass an organization proxy as a workaround without confirming policy and security requirements.

Microsoft documentation


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