Files with mui extension are mainly related to Microsoft Windows are used for language packages with which you can add the default localization of your OS.

There are 3 other file types using
the MUI file extension!

empty icon.mui - OpenGL Glut data

empty icon.mui - Amiga MUI default class/library data

empty icon.mui - Harmony Assistant instrument data

Detailed description

Software that open mui file

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MUI file extension - MultiLanguage Windows resource data

What is mui file? How to open mui files?

File type specification:

System file type icon System file type

mui file icon: mui filetype icon

File extension mui is used for multi-language resource files used in Microsoft Windows operating system.

Various .mui files contain individual language resources used by multi-language editions of Windows 2000/XP and they are still used in other versions of Microsoft Windows.

The main purpose of MUI files is to support multiple languages. Instead of creating a separate version of the operating system for each language, Microsoft creates one version and then uses MUI files to translate the user interface into different languages. For example, if you change the language of your Windows operating system, it will load a different MUI file to display the user interface in the selected language. These files are usually located in a folder named "MUI" within the Windows directory on your computer. They should not be manually altered or deleted, as this could cause problems with the operation of the Windows operating system.

Updated: November 16, 2023

The default software associated to open mui file:

Microsoft Windows icon

Microsoft Corporation logoMicrosoft Windows  Microsoft Windows software

Company or developer:
Microsoft Corporation

A family of operating systems developed by the Microsoft Corp. The first Windows was released in 1985 as a GUI add-on to MS-DOS. MS-DOS based Windows versions were developed to 2000, when was released the last version called Windows ME. Windows based on NT core started in 1993. Windows NT family are developed to these days, the latest version is called Microsoft Windows 11.

Help how to open:

These *.mui files can be installed to Windows with the language options in Control Panels.

How to convert:

There is no way how to convert *.mui files to other formats.

List of recommended software applications associated to the .mui file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open mui file, edit mui file, convert mui file, view mui file, play mui file etc. (if exist software for corresponding action in File-Extensions.org's database).

Settings file type for software that use mui file - MultiLanguage Windows resource data

Programs supporting the exension mui on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for settings mui file action.

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