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ERROR_SXS_MANIFEST_IDENTITY_SAME_BUT_CONTENTS_DIFFERENT
ERROR_SXS_MANIFEST_IDENTITY_SAME_BUT_CONTENTS_DIFFERENT — Two manifests use the same identity but have different contents.
Side-by-Side assembly identity is intended to uniquely describe a particular assembly. Windows found two manifests with identical identities but different file or metadata content, which makes binding unsafe.
This is a packaging/versioning problem. A new or changed assembly should have a correspondingly correct identity rather than reusing an old one.
What to check
- Compare the manifests and their assemblyIdentity values, including version and public key token.
- Remove mixed copies from app-local deployment directories and reinstall a single consistent package.
- For developers, update the identity/version whenever the package content changes in a way that creates a different assembly.
Microsoft: Application manifests
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