What does Windows error code 15102 (ERROR_MUI_INVALID_RC_CONFIG) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The MUI resource-configuration data is malformed, unsupported, or incomplete.

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ERROR_MUI_INVALID_FILE	ERROR_MUI_INVALID_LOCALE_NAME

ERROR_MUI_INVALID_RC_CONFIG

ERROR_MUI_INVALID_RC_CONFIG indicates invalid resource-configuration data in a multilingual resource deployment. Windows uses this configuration data to associate a language-neutral binary with its language-specific resources.

Preserve the resource-configuration data and build inputs that generated it, then compare them with a known working multilingual build. Rebuild the resource set after fixing configuration rather than patching the deployed metadata manually.

What to check

Check that the language-neutral file and its .mui files were generated by the same build pipeline.
Inspect the build and packaging steps that create RC configuration data; do not edit the resource configuration section manually.
Replace partial or mixed-version deployments with a complete package from one build.

Microsoft: MUI Resource Management

Microsoft: Deploying multilingual resources

Microsoft: About Multilingual User Interface

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