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WU_E_PT_ENDPOINTURL_NOTAVAIL
WU_E_PT_ENDPOINTURL_NOTAVAIL means that the client could not obtain a usable URL for a service endpoint. This is commonly a configuration, service-discovery, or managed-service issue; it is not a generic DNS error.
What to check
- Confirm which update service the computer is configured to use and whether its policy is intentionally managed.
- Check that the WSUS or update-service configuration publishes the endpoint expected by the client.
- Compare one failing device with a working device in the same policy scope before changing local settings.
Microsoft: WUA networking error codes
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