.MUM - File Extension for Windows Update Packages

Q

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What is MUM? MUM is used as the file extension for Windows Update Package files. .MUM files are XML files that are used to store information about Windows updates (hot fixes). See the sample .MUM file included below.

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A

File Extension: .MUM

MIME Type: text/plain

File Content: Windows Update Package

.MUM files are Windows Update Package files, that are used to store information about Windows updates (hot fixes). Here is a sample .MUM Windows Update Package file, Microsoft-Media-Foundation-Package~31bf3856ad364e35~x86~~6.1.7600.16385.mum:

<?xml version='1.0' encoding='utf-8' standalone='yes'?>
<?Copyright (c) Microsoft Corporation. All rights reserved.?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v3"
  copyright="Copyright (c) Microsoft Corporation. All Rights Reserved."
  manifestVersion="1.0">
  <assemblyIdentity buildType="release" language="neutral" 
    name="Microsoft-Media-Foundation-Package" processorArchitecture="x86" 
    publicKeyToken="31bf3856ad364e35" version="6.1.7600.16385"/>
  <package identifier="Media Foundation" releaseType="Feature Pack">
    <parent integrate="delegate">
      <assemblyIdentity buildType="release" language="neutral" 
        name="Microsoft-Windows-Foundation-Package" 
        processorArchitecture="x86" publicKeyToken="31bf3856ad364e35" 
        version="6.1.7600.16385"/>
    </parent>
    <update description="Media Foundation" displayName="Media Foundation" 
      name="MediaFoundation" restart="required">
      <component>
        <assemblyIdentity buildType="release" language="neutral" 
          name="Microsoft-Media-Foundation-Deployment" 
          processorArchitecture="x86" publicKeyToken="31bf3856ad364e35" 
          version="6.1.7600.16385" versionScope="nonSxS"/>
      </component>
    </update>
  </package>
</assembly>

.MUM Windows Update Package file sample: Click sample.mum to download.

Since .MUM files are in text format, you can use Notepad or any text editor to create or modify them. No special software is needed.

For for information on how to use .MUM Windows Update Package files, see links below:

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