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STATUS_MUI_INVALID_RC_CONFIG
The RC Config metadata cannot describe a valid MUI association
MUI files and their language-neutral modules carry resource configuration data that identifies file type, localized and neutral resource sets, checksums, language, and fallback behavior. The loader uses this metadata to decide whether the pair can be safely combined.
This status points to the metadata itself rather than a missing localized string. It can follow malformed XML used during resource compilation, unsupported configuration versions, broken post-build tooling, or binary corruption in the embedded RC Config section.
What to inspect
- Dump the embedded resource configuration with MUIRCT and compare it with the build input.
- Validate required win32Resources attributes and localizedResources or neutralResources entries.
- Confirm the same resource toolchain and configuration were used for all language outputs.
- Rebuild the resource pair rather than editing the compiled section in place.
References
- Microsoft Open Specifications: NTSTATUS values
- Microsoft: preparing a resource configuration file
- Microsoft: MUI resource utilities
- Microsoft: MUI resource management
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