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WPN_E_INVALID_HTTP_STATUS_CODE
WPN_E_INVALID_HTTP_STATUS_CODE is an HRESULT used by the Windows notification platform. It means that a polling request used by the notification platform received a non-success HTTP response.
What to check for WPN_E_INVALID_HTTP_STATUS_CODE
- Record the response status, safe response headers, endpoint URL, and correlation information.
- Check authentication, redirects, authorization, rate limits, and server errors at the polling endpoint.
- Handle non-2xx results explicitly instead of parsing the body as a successful notification response.
Diagnostic interpretation
This result has the HRESULT value 0x803E012B. AllStat records the condition as “The notification platform has received invalid HTTP status code other than 2xx for polling.”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the wpn / code operation.
- Reproduce this result with the smallest valid input and note whether the result changes with identity, architecture, service state, or target object.
Retry and recovery
Treat WPN_E_INVALID_HTTP_STATUS_CODE as a checkpoint, not as a request to loop. Retry only after evidence shows that the rejecting state has changed, and verify the same scenario end to end.
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