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WU_E_PT_ECP_FILE_LOCATION_ERROR
WU_E_PT_ECP_FILE_LOCATION_ERROR means the external CAB processor could not obtain the locations of files needed for processing. This can indicate inconsistent content-location metadata or an inaccessible content path.
What to check
- Review prior redirects, content-location changes, and authentication failures for the same request.
- For WSUS, verify content-directory availability and synchronization state on the server.
- Check proxy and load-balancer rules if they rewrite or route update content differently from metadata requests.
Microsoft: WSUS messages and troubleshooting tips
Microsoft: Troubleshoot WSUS synchronization and import issues
Microsoft: Windows Update error reference
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