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ERROR_SXS_FILE_NOT_PART_OF_ASSEMBLY
ERROR_SXS_FILE_NOT_PART_OF_ASSEMBLY — The requested file is not declared as part of the Side-by-Side assembly.
The operation referred to a file that the assembly manifest does not list. The physical file may exist, but it is not part of the assembly contract Windows is attempting to service or verify.
Correct the manifest and package contents together. Adding an undeclared file to a Windows component directory is not a supported fix.
What to check
- Identify the file and owning manifest from the error trace.
- Check whether a partial update or mixed application version introduced an extra file.
- For product developers, declare the file correctly in the assembly manifest and rebuild the package.
Microsoft: About Side-by-Side assemblies
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