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WU_E_METADATA_FAILURE_PROCESSING_FRAGMENTSIGNING_CONFIG
WU_E_METADATA_FAILURE_PROCESSING_FRAGMENTSIGNING_CONFIG indicates that the configuration was reached but Windows Update encountered an operational failure while processing fragment-signing data. This differs from an explicit malformed-configuration error.
How to investigate
- Inspect the first error before this code for transport, cache, parsing, or certificate-chain details.
- Compare a failing client with a working client that uses the same update source and policy.
- If the error started immediately after a WSUS or catalog publishing change, check the server-side update metadata and signing workflow.
Microsoft: Windows Update log files
Microsoft: Certificates and security for Updates Publisher
Microsoft: Windows Update error reference
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