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| WU_E_METADATA_FAILURE_PROCESSING_FRAGMENTSIGNING_CONFIG | WU_E_METADATA_XML_FRAGMENTSIGNING_MISSING |
WU_E_METADATA_XML_MISSING
WU_E_METADATA_XML_MISSING means the XML configuration used for metadata verification was incomplete. The client cannot infer absent security settings safely, so verification stops.
What to check
- Determine which update source supplied the configuration and whether the issue is reproducible for every client using it.
- For an internal service, validate catalog publication and synchronization rather than editing server output manually.
- Use the log to locate a more specific companion error, such as a missing certificate, enforcement mode, or timestamp validity setting.
Microsoft: Windows Update log files
Microsoft: Windows Update security
Microsoft: Windows Update error reference
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