MMU file format description

Many people share .mmu files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .mmu file can be edited, converted or printed with. On this page, we try to provide assistance for handling .mmu files.

1 filename extension(s) found in our database.

.mmu - myPM Merge Data

The MMU data files are related to myPM Merge. The 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.

myPM Merge
Data files
- / -
myPM Merge Data related extensions:
Paradox Table Property File
LOCUS Vertical Observation Data
Logitech Harmony Tutor Data
Music Maker Audio Arrangement Data
Autodesk Land Desktop Hydrology Data
RapidBuilder Simulation Data

Naturally, other applications may also use the .mmu file extension. Even harmful programs can create .mmu files. Be especially cautious with .mmu files coming from an unknown source!

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 can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

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?

Similar file extensions in our database:

MACSIMUS Metamake Data
Autodesk AutoCAD Menu Definition
General CADD Menu
Matrix Market File
SmartWare Menu Keywords Data
FreeMind MindMap

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you have useful information about the .mmu file format, then write to us! >> MMU file