Open MUI File

Information, tips and instructions

What is MUI File

The Multilingual User Interface, related to the MUI file format, is a technology developed by Microsoft for the Windows system, MS Office and other software, which allows the installation of multiple interface languages. The contents of the MUI files are data for a program or a .DLL file, which are necessary to change the interface language within a certain program.

Facts About MUI Files

MUI file format emerged since Windows 2000 system, and it is obviously present in all newer versions. Under the assumption, MUI files take names after the .EXE or .DLL files they refer to, for example: notepad.exe.mui. However, it is only a guide, which is not always reflected in a system.

Each MUI file is assigned a location, which contains data related to a specific language, therefore, these files are generally located in subfolders with names that include specific languages. For example, within the WINDOWS 7 operating system, there are 35 versions of the tipresx.dll.mui file.

Typically, the entire .mui system is stored in the "System32" directory, within a subdirectory whose name corresponds to the language code (for example, "System32 / en-US"). .Mui files should not be removed because they are part of the Windows locale system. MUI files relevant to individual programs can be found in the Program Files catalogs.

Changing the system language, as long as the correct MUI files are installed or downloaded, is fairly straightforward and can be done using the control panel.

It should be noted that there are several categories, of a different nature, for MUI files:

  • Amiga MUI default class / library file
  • OpenGL Glut file
  • Myriad Instruments Software Files

Each of them is opened and/or used in a different way and, therefore, must be treated according to their structure and content. Therefore, care must be taken to correctly identify this file and thus avoid any confusion when working with them.