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WU_E_PT_HTTP_STATUS_CONFLICT
WU_E_PT_HTTP_STATUS_CONFLICT maps to HTTP 409. The server received the request but could not complete it because its current resource or session state conflicts with the request.
What to check
- Determine whether the failure is transient or follows every scan from every client.
- Check WSUS, IIS, proxy, and database-related logs for a server-side state conflict at the same timestamp.
- If the client retried after a redirect or cache refresh, inspect the first failure that caused the retry sequence.
Microsoft: WSUS messages and troubleshooting tips
Microsoft: Troubleshoot WSUS connection failures
Microsoft: Windows Update error reference
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