| Previous | Next |
| WU_E_METADATA_XML_LEAFCERT_ID_MISSING | WU_E_METADATA_BAD_SIGNATURE |
WU_E_METADATA_XML_BASE64CERDATA_MISSING
WU_E_METADATA_XML_BASE64CERDATA_MISSING means the metadata configuration names a certificate but does not include the encoded certificate data that the verifier expects.
What to check
- Treat this as incomplete metadata from the update source rather than a reason to turn off signature validation.
- Check that the server output has not been altered by a proxy, cache, or failed synchronization.
- For internal publishing, validate the certificate export and catalog-generation process.
Microsoft: Windows Update security
Microsoft: Certificates and security for Updates Publisher
Microsoft: Windows Update error reference
Looking for a different code? Search another status or error code.