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ERROR_SXS_IDENTITY_DUPLICATE_ATTRIBUTE
ERROR_SXS_IDENTITY_DUPLICATE_ATTRIBUTE — An assembly identity declares the same attribute more than once.
An identity must have a single value for each attribute. Duplicate declarations make the assembly identity ambiguous even if the repeated values look similar.
Correct the manifest generation or template and deploy the fixed package as a whole.
What to check
- Open the exact manifest named by sxstrace and inspect its assemblyIdentity element.
- Remove the duplicate attribute while preserving the value that matches the intended assembly.
- Check generated fragments and manifest-merge tooling, which often introduce this error.
Microsoft: Application manifests
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