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ERROR_MUI_INTLSETTINGS_INVALID_LOCALE_NAME
ERROR_MUI_INTLSETTINGS_INVALID_LOCALE_NAME means Windows rejected the locale supplied for a UI-language installation operation. The requested locale does not identify a valid language configuration for the operation.
What to check
- Check the locale passed by deployment tooling or policy against the supported Windows language name.
- Do not substitute a folder name, display name, or arbitrary culture string for the locale expected by the language installation API.
- Correct the deployment configuration and retry the language installation.
Microsoft: MUI Resource Management
Microsoft: Deploying multilingual resources
Microsoft: About Multilingual User Interface
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