File Extension MUI

Information about MUI files and how to open them

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What is a MUI file (a file with file extension MUI)?

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.

Last updated July 24th, 2011

Product(s) that open MUI files

We currently don't have any products listed that are known to open this specific type of file, but we recommend trying a multi-purpose file opener:

FreeFileViewer is a universal free file opener that can open almost any file, like photos, videos, documents, spreadsheets and more. Click to download.

Do you want personal assistance opening your MUI file?

We have technical staff ready to help you round-the-clock, 7 days a week. They are familiar with all kinds of problems opening files. In fact, they can help with almost any technical issue you have, like opening MUI files, PC speed and performance, malware removal, software uninstallation etc.

Free problem diagnosis! Give us a call, day or night, at 855-246-1076 (toll-free USA and Canada). Everything is handled over the phone or by remote PC connection, so no visit to your home is necessary.