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
Help us help others
File.org helps thousands of users every day, and we would love to hear from you if you have additional information about MUM file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.
Not sure exactly what type of file you are trying to open? Try our new File Analyzer. It is a free tool that can identify more than 11,000 different kinds of files - most likely yours too! It will help you find software that can handle your specific type of file. Download File Analyzer here.