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May 10, 2026 |
File extension mum
Name: System Files
Popularity: 6
Open With: Ultra File Opener
What is this mum file?
Package containing a software update or "hotfix" for Windows Vista; installed by Windows using the built-in software update program. MUM files typically use the following file naming convention: "Package_[#]_for_kb[number]~[string]~[OS_version]~~[update_version].mum." The primary update file is named "Update.mum."
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