What does Windows error code 14091 (ERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_NAME) mean?

 
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ERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_VALUE ERROR_SXS_IDENTITY_DUPLICATE_ATTRIBUTE

ERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_NAME

ERROR_SXS_INVALID_IDENTITY_ATTRIBUTE_NAME — An assembly identity includes an attribute name that is not allowed by Side-by-Side identity rules.

The XML itself may be well-formed, but the identity contains a name that Side-by-Side activation does not recognize or allow. This is usually an invalid manifest generator output or a typo in a hand-authored manifest.

Use the identity schema and the trace output to correct the manifest at its source.

What to check

  • Locate the exact assemblyIdentity element in the manifest named by sxstrace.
  • Remove unsupported attributes instead of renaming them heuristically.
  • Verify the corrected package on a clean test machine before deployment.

Microsoft: Assembly manifests

Microsoft: sxstrace

Microsoft: About Side-by-Side assemblies


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