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WS_E_PROXY_REQUIRES_BASIC_AUTH
WS_E_PROXY_REQUIRES_BASIC_AUTH is a Windows Web Services API HRESULT. It means that the proxy rejected the authentication scheme offered by the client and requires HTTP Basic authentication.
Diagnostic discriminator: Confirm that the authentication challenge came from the intended proxy and that the proxy connection is protected as required by policy before supplying Basic credentials. If another supported scheme is rejected but Basic is explicitly requested, the issue is authentication negotiation, not origin-server reachability. Preserve the proxy realm without recording the password.
What to check for WS_E_PROXY_REQUIRES_BASIC_AUTH
- Confirm that Basic authentication is permitted by the organization and protected by TLS to the proxy.
- Configure credentials through the supported proxy-authentication mechanism and protect them from logs.
- Verify the proxy realm and avoid automatically sending credentials to an untrusted proxy address.
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