HRESULT 0x80244016 (WU_E_PT_HTTP_STATUS_BAD

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Description:

The update service returned HTTP 400 Bad Request for a Windows Update protocol request.

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WU_E_PT_REFRESH_CACHE_REQUIRED	WU_E_PT_HTTP_STATUS_DENIED

WU_E_PT_HTTP_STATUS_BAD_REQUEST

WU_E_PT_HTTP_STATUS_BAD_REQUEST maps to HTTP 400: the server could not process the request because its syntax was invalid. In a managed environment, check the update-service URL and any proxy or gateway that could rewrite requests.

What to check

Verify the WSUS endpoint configured by policy and compare it with a working client.
Inspect proxy, reverse-proxy, or web-filter logs for the rejected request.
Correlate the HTTP 400 with SOAP or client-version errors that explain why the request was rejected.

Microsoft: WUA networking error codes

Microsoft: Windows Update troubleshooting

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