| Windows Vista Update Package Format | |
| Microsoft | |
| Ads |
File with .MUM extension contains information about system update or patch for Windows family of operating systems. It is a text file saved in XML format and is a part of Windows update installer package.
Primary MUM file is named Update.mum. Update or patch files use following naming convention: [package number or name]~[unique string]~[OS version]~~[update version].mum, for example, Microsoft-Media-Foundation-Package~31bf3856ad364e35~x86~~6.1.7600.16385.mum.
| .adm | Administrator Policy Template Format |
| .adml | Microsoft Administrative Language-specific XML Template Format |
| .admx | Microsoft Administrative XML Template Format |
| .aml | Microsoft Assistance Markup Language |
| .ani | Animated Cursor |
| .ann | Microsoft Windows Help Annotation Format |
| .aos | Archos Signed Encrypted Data Format |
| .asec | Google Android Encrypted Application Package Format |