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MUI File Extension

The MUI file extension was created by Microsoft and is also known as the Multilingual User Interface File. MUI is classified as a System Files and This file is saved in a binary format, which requires a specific program to read its contents. You can open MUI files in Myriad Harmony Assistant program.

Multilingual User Interface File Type

Multilingual User Interface File Type
Extension .mui
Developer Microsoft
Popularity 5.0 (1 Votes)
Mime Type mime-type/not.available
Default Program Myriad Harmony Assistant
Category System Files
Format Binary
Updated 7/1/2025

What is a MUI File Type?

Many MUI files can be found in the Windows directory SystemRoot%\ (for example,% SystemRoot%\ in-US\ in Windows 7) or in the Windows directory. They can also be located in specific program installations, such as Windows Journal, Windows Defender, Windows Mail, and d' other Microsoft Windows programs including Notepad (notepad.exe.mui) .Additional language packs can be installed in Windows 7 by selecting Control Panel et& Rarr; Clock, Language and Region & R& R& Change; R& R& Rarr; Rarr; Claviers and click the Install / Uninstall button.

Free Online MUI Tools & Apps

Access powerful and secure free online MUI tools to convert, view, edit, merge, split, and compare MUI files — all without installing any software. Our tools support the .MUI (Multilingual User Interface File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your MUI files directly from your device with ease.

MUI Files Common Issues

There are few common issues with the Multilingual User Interface File .MUI=10963 File Extensions while opening the .MUI=10963 files on Windows and MacOs, we have solution to those issues such as:

Can't Open MUI Files?

  1. You must have supported software programs installed for Multilingual User Interface File on your system such as Myriad Harmony Assistant.
  2. Associate default Myriad Myriad Harmony Assistant program for *.mui (Multilingual User Interface File) files.

    Associate MUI Default Program on Windows
    1. Right-click a *.MUI (e.g example.mui) file and click Open With.
    2. In the Open with dialog box, click Myriad Myriad Harmony Assistant program Or click Browse to locate the program (*.exe) that you want.
    3. Select check box for Always use this app to open .mui files.

    Associate MUI Default Program on MacOs
    1. Click *.MUI (e.g example.mui) file and click information -> Open With.
    2. In the programs list, click Myriad Myriad Harmony Assistant program Or other appropriate program that you want.
    3. Confirm Change for all... and Contine.
    4. A message will appear "This change will be applied to all files with .Myriad Harmony Assistant extension. By clicking Continue you confirm your selection", click Contine to apply changes.

All Platform Software Programs for MUI File Extension

List of all softwares that can open the MUI files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open MUI File on Windows

Software License Developer
Myriad Harmony Assistant image. Myriad Harmony Assistant 9 for Windows Freeware Myriad

MacOs logo image - FileProInfo.comOpen MUI File on Mac OS

Software License Developer
Myriad Harmony Assistant image. Myriad Harmony Assistant 9 for MacOs Freeware Myriad

Linux logo image - FileProInfo.comOpen MUI file on Linux

Software License Developer
Myriad Harmony Assistant image. Myriad Harmony Assistant 9 for Linux Freeware Myriad

Website logo image - FileProInfo.comOpen MUI file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen MUI file on iOS

Software License Developer

Android logo image - FileProInfo.comOpen MUI file on Android

Software License Developer

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

MUI file extension icon image.About MUI - Multilingual User Interface File

FileProInfo is to help you understand about the Multilingual User Interface File with *.MUI suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for MUI. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

If you would like to suggest any additions or updates to this page for MUI, please let us know.

Updated 7/1/2025