MUI File Description

Researcher:   |   Last Updated: November 26, 2018

Microsoft Silver

MUI File Summary

Two known software programs (notably, Myriad Harmony Assistant developed by Myriad Software) are related to the MUI file extension. In addition, they are categorized under two distinct file types, but mainly identified as the Myriad User Instrument File format. The majority of MUI files are considered Audio Files, but they can also be System Files.

The MUI File Extension can be viewed on the Windows, Mac, and Linux operating systems. They are supported on both desktop and mobile devices. MUI files have a "Low" Popularity Rating; this means that they are not present on most devices.

To learn more about MUI files and their associated software applications, please see the information below. Plus, we provide a basic troubleshooting guide to solve problems with opening MUI files.

Low
Demand
2059
Rank

/ 11690

Active

Importance

26

November

2018

Revised

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Varieties of MUI Files

  2 known file types use this extension

Primary MUI File Association

.MUI
File Name:.mui
Class:Myriad User Instrument File

A user instrument file by Myriad musical notation software programs. It saves sounds for various instruments such as woodwinds, piano, brass, strings. The files are used to generate realistic sounds.

Developer: Myriad Software
Function:Audio Files
Key: HKEY_CLASSES_ROOT\.mui

Software Programs That Open The Myriad User Instrument File:


Myriad Harmony Assistant by Myriad Software

Windows
Mac
Linux

Other MUI Descriptions

.MUI
File Name:.mui
Class:Multilingual User Interface File

A resource file utilized by the Windows MultilingualUser Interface component. It has the resources which make it possible to change the Windows interface into different languages.

Developer: Microsoft Corporation
Function:System Files

Software Programs That Open Multilingual User Interface File Files:


Microsoft Windows Multilingual User Interface by Microsoft Corporation

Compatible with:

Windows

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MUI Popularity


OS Rank

Windows (97.14%)
Macintosh (2.06%)
Linux (0.73%)
Chrome (0.05%)
Other (0.01%)


Troubleshoot MUI Files


Issues Opening MUI Files

Myriad Harmony Assistant is Not Installed

Double-clicking your MUI file prompts the message "%%os%% Can't Open MUI File". When this happens, it is commonly due to Myriad Harmony Assistant missing in %%os%%. The OS won't know what to do with your MUI file, so double-clicking to load the file doesn't work.


Tip: If you know of another program that can open your MUI file, you can try opening it by selecting the application from the programs listed.


Wrong Version of Myriad Harmony Assistant is Installed

In other instances, your Myriad User Instrument File file version may not be supported by your version of Myriad Harmony Assistant. Visit the Myriad Software website to download (or purchase) the latest version of Myriad Harmony Assistant. Your Myriad User Instrument File file was probably created by a newer release of Myriad Harmony Assistant than what's currently installed your computer.


Tip: Right-clicking on your MUI, then clicking "Properties" (Windows) or "Get Info" (Mac), can provide clues about your file version.


Ultimately, most of the difficulties opening MUI files are due to having the wrong version of Myriad Harmony Assistant installed.


Additional MUI Opening Issues

Although you might already have Myriad Harmony Assistant or another MUI-associated software installed on your computer, you can still encounter problems opening Myriad User Instrument File files. Other MUI opening errors can be created by other system problems inside of %%os%%. Issues that aren't software-related:

  • Windows Registry MUI file paths that are incorrect
  • Deletion of the MUI file description from the Registry by mistake
  • Partial installation of Myriad Harmony Assistant that did not fully complete
  • The MUI itself is corrupted
  • Your MUI has adversely impacted by malware
  • Hardware associated with MUI has outdated drivers
  • Your computer does not have the adequate system resources to open the Myriad User Instrument File format

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