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MUM File

What are MUM files and how to open them

Are you having problems opening a MUM file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your MUM files.

What is a MUM file?

A .MUM file is a Windows Update Package file.

The .mum file extension is most commonly associated with Windows update files. These files contain software updates for the Microsoft Windows operating system. They are automatically downloaded and installed by the OS.

How to open MUM files

Important: Different programs may use files with the MUM file extension for different purposes, so unless you are sure which format your MUM file is, you may need to try a few different programs.

We have not yet verified any programs for Windows that work with this specific file format. If you know one, please use the 'Suggest a program' link below. Thanks!

Last updated: May 31, 2022

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