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STATUS_MUI_FILE_NOT_LOADED
No loaded MUI association exists in the loader cache
The MUI loader maintains state for language-neutral modules and the language-specific resource files selected for them. This status means a later operation expected a loaded MUI entry, but the cache contains no such association.
The file might never have loaded, might have failed earlier validation, or the owning module may already have been unloaded. It is therefore important to find the first load or validation failure rather than treating the cache miss as the root cause.
What to inspect
- Trace the initial module and resource-loading calls before the cache lookup.
- Check for earlier STATUS_MUI_FILE_NOT_FOUND or STATUS_MUI_INVALID_FILE results.
- Verify module lifetime and whether another thread unloaded or replaced the base image.
- Do not assume that inserting a file into the directory updates an existing process cache automatically.
References
- Microsoft Open Specifications: NTSTATUS values
- Microsoft: MUI resource management
- Microsoft: user interface language management
- Wine source: locale and MUI APIs
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