A daily updated filename extension database!

MUI file extension

The table below provides useful information about the .mui file extension. It answers questions such as:

  • What is the .mui file?
  • What program do I need to open a .mui file?
  • How can the .mui file be opened, edited or printed?
  • How can I convert .mui files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Multilingual User Interface Data

MUI file is a Multilingual User Interface Data. Multilingual User Interface (MUI) is the name of a Microsoft technology for Microsoft Windows, Microsoft Office and other applications that allows for the installation of multiple interface languages on a single system.
Application: Microsoft Windows
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
MUI aliases:
MUI related links:
MUI related extensions:

Other types of files may also use the .mui file extension.

🚫 The .mui file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

jui, ui, mul, mu, mi, umi, myi, muk, mii

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

QT Jambi User Interface Data
MAKIchan Graphics
Multak Mini 8162 Encoded Audio
CoCreate Document
Ultima Online MUL Data
Nintendo Wii Virtual Avatar
SeeYou Multiple Flights Data
MuPAD Source Code
MySQL MyISAM Table Index Data
Epic Warhammer 40k: Final Liberation Game Data

🔴 Can't open a .mui file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .mui file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .mui file extension, write to us!

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