Knowledge

ERROR_MUI_INTLSETTINGS_INVALID_LOCALE_NAME - 15108 (0x3B04)

Locale installation failed.

Updated: Feb 21, 2026

Technical Meaning

The error code ERROR_MUI_INTLSETTINGS_INVALID_LOCALE_NAME with the numeric value 15108 and hex code 0x3B04 indicates that a locale name provided for internationalization settings is invalid. This typically occurs when an application or system component attempts to use a locale setting that does not exist.

Error Details

This error is specific to the Windows API, particularly in scenarios where internationalization features are being utilized. The ERROR_MUI_INTLSETTINGS_INVALID_LOCALE_NAME is returned by functions related to international settings and language packs installation or configuration.

Usage Context

The context in which this error might occur includes:

  • Installation of a new language pack or regional settings.
  • Configuration changes for internationalization features within an application.
  • System updates that involve locale-related adjustments.

Developer Interpretation

When encountering ERROR_MUI_INTLSETTINGS_INVALID_LOCALE_NAME, developers should ensure the following:

  • The locale name provided is correctly formatted and exists on the system. Locale names are case-sensitive and must match exactly as they appear in the Windows registry or language pack files.
  • The application or component making the call to internationalization functions has the necessary permissions to access and modify regional settings.

Related Errors

  • ERROR_INVALID_PARAMETER (1208, 0x4C8): Indicates that a parameter passed to an API is invalid. This could be related if the locale name is not recognized but might also indicate other issues with input parameters.
  • ERROR_FILE_NOT_FOUND (2, 0x2): Suggests that the specified file or resource does not exist, which could be relevant in scenarios where a language pack or regional settings file is missing.

FAQ

Q: What causes this error?

A: The error typically occurs when an invalid locale name is provided to internationalization functions. This can happen due to typos, incorrect formatting, or the absence of the specified locale on the system.

Q: How can I resolve it?

A: Ensure that the locale name used in your application or configuration matches exactly with those available on the system. Verify the existence and correct spelling of the locale name.

Summary

The ERROR_MUI_INTLSETTINGS_INVALID_LOCALE_NAME error indicates an invalid locale name provided to internationalization functions within Windows. Developers should validate input parameters, ensure correct formatting, and check for the presence of required language packs or regional settings files.