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WS_E_PROXY_REQUIRES_DIGEST_AUTH
WS_E_PROXY_REQUIRES_DIGEST_AUTH is a Windows Web Services API HRESULT. It means that the proxy rejected the offered authentication scheme and requires HTTP Digest authentication.
What to check for WS_E_PROXY_REQUIRES_DIGEST_AUTH
- Inspect the proxy authentication challenge and verify that the client supports the required Digest parameters.
- Configure credentials through the supported API rather than constructing authentication headers manually.
- Confirm proxy realm, clock and nonce behavior if authentication continues to fail.
Diagnostic interpretation
This result has the HRESULT value 0x803D0019. AllStat records the condition as “The HTTP proxy server requires HTTP authentication scheme 'digest'.”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the ws / proxy / requires / digest / auth operation.
- Preserve the first failure in the call chain; a later HRESULT can describe cleanup rather than the original ws / proxy / requires / digest / auth condition.
Retry and recovery
A retry is useful only after the cause behind WS_E_PROXY_REQUIRES_DIGEST_AUTH has been changed or removed. Reproduce the original call and confirm both the return value and the resulting resource state.
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