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| WU_E_UPDATE_NOT_APPROVED | WU_E_PT_SECURITY_VERIFICATION_FAILURE |
WU_E_PT_CATALOG_SYNC_REQUIRED
WU_E_PT_CATALOG_SYNC_REQUIRED means the update service does not support the requested category-specific search. The client must obtain or use a full catalog instead of continuing with the narrow search.
What to check
- Confirm whether the error is limited to one managed update service or occurs with every scan.
- For WSUS, check synchronization health and whether the server can supply the catalog expected by the client.
- Avoid treating this as a download or proxy failure; it is a search-capability mismatch between client and service.
Microsoft: Windows Update error reference
Microsoft: Troubleshoot WSUS client agents
Microsoft: Windows Update log files
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