A daily updated filename extension database!

MMU file extension

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

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

Table of Contents

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

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

✅ myPM Merge Data

MMU file is a myPM Merge Data. myPM Merge is a MS Windows Software Application that generates merged MS Word Documents and MS Excel Workbooks.
MMU format description not yet available
Category: Data files
Application: myPM Merge
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
MMU aliases:
MMU related links:
MMU related extensions:

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

🚫 The .mmu file extension is often given incorrectly!

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

lmu, mku, mm, mmh, mmi, mmj, mmk, mnu, mu, mum, nmu

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Media Processing Server Index File
EMC Documentum Client Library Query Cache
RPG Maker 2000 Map
MuPAD Source Code
ProMark3 GPS MobileMapper Job File
MagicKey Units Definition
Microsoft Windows Update Package
MACSIMUS Metamake Data
Matrix Market File
Autodesk AutoCAD Menu Definition

🔴 Can't open a .mmu 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 .mmu 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 .mmu file extension, write to us!

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