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WU_E_METADATA_TIMESTAMP_TOKEN_CACHELOOKUP
WU_E_METADATA_TIMESTAMP_TOKEN_CACHELOOKUP means the client failed while reading timestamp-token data from its local metadata-verification cache. It does not necessarily prove that the whole Windows Update data store is corrupt.
Useful checks
- Inspect the preceding log messages for the precise cache or storage operation that failed.
- Check whether the issue is local to one computer or repeated across clients using the same update service.
- If a refresh is attempted afterward, preserve the logs so the refresh outcome and any trust error remain visible.
Microsoft: Windows Update log files
Microsoft: Windows Update error reference
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