File extension MUI
| File type | MultiLanguage Windows Resource Format |
| Developer | Microsoft |
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What is a MUI file?
Files with the .MUI extension contain resources used by the Multilingual User Interface component, versions 2000 and newer. The resources allow for the changing of the Windows system interface language, as well as the language of its apps. MUI system files are, by default, found in the main system catalog, whereas the relevant files for the individual programs can be found in Program Files catalogs.
Changing the system language, provided that the right MUI files are installed or downloaded, is quite easy, and can be done using the control panel.
Program(s) that can open the .MUI file
How to open MUI files
If you cannot open the MUI file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports MUI among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the MUI file can be found in the table. Now just download and install the appropriate application.
Possible problems with the MUI format files
The inability to open and operate the MUI file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the MultiLanguage Windows Resource Format file. Below is a list of possible problems.
- Corruption of a MUI file which is being opened
- Incorrect links to the MUI file in registry entries.
- Accidental deletion of the description of the MUI from the Windows registry
- Incomplete installation of an application that supports the MUI format
- The MUI file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the MUI file.
- Drivers of equipment used by the computer to open a MUI file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the MUI file should operate with your programs without any problem. If the problem with the MUI file has not been solved, it may be due to the fact that in this case there is also another rare problem with the MUI file. In this case, the only you can do is to ask for assistance of a professional staff.
Similar extensions
| .adm | Administrator Policy Template Format |
| .adml | Microsoft Administrative Language-specific XML Template Format |
| .admx | Microsoft Administrative XML Template Format |
| .aml | Microsoft Assistance Markup Language |
| .ani | Animated Cursor |
| .ann | Microsoft Windows Help Annotation Format |
| .aos | Archos Signed Encrypted Data Format |
| .asec | Google Android Encrypted Application Package Format |
How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.MUI) you have two ways to do it. The first and the easiest one is to right-click on the selected MUI file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the MUI file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. MUI) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.