MUI File

What are MUI files and how to open them

Are you having problems opening a MUI file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your MUI files.

What is a MUI file?

MUI stands for Multilingual User Interface. Files that contain the .mui file extension are resource files that are used by Windows operating systems, versions 2000 and later. The MUI files contain resources that allow you to change your Windows interface to display different languages. For example, if you prefer your user interface to be displayed to you in German or in Spanish instead of English, your MUI files would allow this to happen.

While files with the .mui extension are most commonly associated with the Windows Multilingual User Interface, they can also be created by an Open GL toolkit used to write OpenGL programs.

How to open MUI files

Important: Different programs may use files with the MUI file extension for different purposes, so unless you are sure which format your MUI file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested ten different MUI openers which you will find listed below.

Last updated: July 31, 2023

Various apps that use files with this extension

These apps are known to open certain types of MUI files. Remember, different programs may use MUI files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about MUI file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.