Slimdown11 – turn Windows 11 or LTSC 2024 into classic/legacy Windows

Discussion in 'Windows 11' started by SunLion, Mar 2, 2025.

  1. balanadi

    balanadi MDL Senior Member

    Apr 24, 2014
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    i will do some test now with 22621... looks more easy close to 10 .. i can not sleep ...hahahah
     
  2. SunLion

    SunLion MDL Expert

    May 11, 2011
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    I'm updating your .mum files to Windows 10 version 5917.

    I hope I did everything correctly...

    Let's see what happens...

    :)
     
  3. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    Yes, these are really great applications, but as far as I understand, they cannot be included in the shell of our Integrator in the same way as we included the install_wim_tweak.exe application?
    :thinking:
     
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  4. wuliyen

    wuliyen MDL Member

    Oct 6, 2009
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    My goal is to be fast, small in size, and try to delete any conflicts, including updating functions.


    windows11 24H2 26100, At present, the image is unfolded, and the C drive is about 4.2GB (note that it is not a compressed system drive), which is completely sufficient for ordinary users.
     
  5. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    Very interesting, I would like to look at your complete tool for working with the image, to test it on 24H2 ...
    :cheers:
     
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  6. SunLion

    SunLion MDL Expert

    May 11, 2011
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    #587 SunLion, Jun 6, 2025
    Last edited: Jun 6, 2025
    (OP)
    Hi @balanadi

    So, I finished editing the .mum files and I'm testing them.

    With version 19044_EnterpriseS, using the modified .mum files, I got these results:

    - Captured CurrentBuild = 19044 (image CurrentBuild.png)

    - KB5003791 was installed (image Packages.png)

    - But in the end it shows as 19041.5917 and not 19044.5917 as it should be (image ListINFO.png)

    I still don't know where this can be fixed...

    But the positive effect was on the image size:

    - Without using the modified .mum files: install.wim = 3,768,882 KB (image Files2.png)

    - Using the modified .mum files: install.wim = 3,178,994 KB (image Files.png)

    I'm still going to test the installation in VirtualBox...

    Confirmed. Shows 19041.5917 when installed (image VBoxTest.png)

    If you can help me with this, I would be very grateful!

    Here is the package with the modified files: 19041.5917_mum.7z

    In psw
     

    Attached Files:

  7. balanadi

    balanadi MDL Senior Member

    Apr 24, 2014
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    I forget to tell you that ... sorry ,
    I removed also the enablement from the modified mum ...

    the fix is this :
    Code:
    <?xml version="1.0" encoding="utf-8" standalone="yes"?>
    <assembly xmlns="urn:schemas-microsoft-com:asm.v3" manifestVersion="1.0" copyright="Copyright (c) Microsoft Corporation. All Rights Reserved.">
      <assemblyIdentity name="Microsoft-Windows-EditionPack-Professional-Package" version="10.0.19041.5678" processorArchitecture="amd64" language="en-US" buildType="release" publicKeyToken="31bf3856ad364e35" />
      <package identifier="Microsoft-Windows-EditionPack-Professional-en-US" releaseType="Language Pack">
        <parent disposition="detect">
          <assemblyIdentity name="Microsoft-Windows-EditionPack-Professional-Package" version="10.0.19041.5678" processorArchitecture="amd64" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" />
        </parent>
        <update name="4022694452405df4e5c77d173c415045">
          <package contained="false" integrate="hidden">
            <assemblyIdentity name="Microsoft-Windows-NetFx3-OC-Package" version="10.0.19041.4842" processorArchitecture="amd64" language="en-US" buildType="release" publicKeyToken="31bf3856ad364e35" />
          </package>
        </update>
        <update name="284b538631400412906f5288c424c8b2">
          <package contained="false" integrate="hidden">
            <assemblyIdentity name="Microsoft-Windows-NetFx4-US-OC-Package" version="10.0.19041.4842" processorArchitecture="amd64" language="en-US" buildType="release" publicKeyToken="31bf3856ad364e35" />
          </package>
        </update>
        <update name="3bae9b785577f06f8d43acacef762e5b">
          <mum2:customInformation xmlns:mum2="urn:schemas-microsoft-com:asm.v3">
            <mum2:noAutoMerge />
          </mum2:customInformation>
          <package contained="false" integrate="hidden">
            <assemblyIdentity name="Microsoft-Windows-Product-Data-21h2-EKB-Wrapper-Package" version="10.0.19041.3636" processorArchitecture="amd64" language="en-US" buildType="release" publicKeyToken="31bf3856ad364e35" />
          </package>
        </update>
        <update name="1c0e6f10d3b27ad37acf6be7ab5303a5">
          <mum2:customInformation xmlns:mum2="urn:schemas-microsoft-com:asm.v3">
            <mum2:noAutoMerge />
          </mum2:customInformation>
          <package contained="false" integrate="hidden">
            <assemblyIdentity name="Microsoft-Windows-Product-Data-EKB-Wrapper-Package" version="10.0.19041.3636" processorArchitecture="amd64" language="en-US" buildType="release" publicKeyToken="31bf3856ad364e35" />
          </package>
        </update>
        <update name="1cea2dad1090379f3dd3eda1bb001145">
          <package contained="false" integrate="hidden">
            <assemblyIdentity name="Microsoft-Windows-Enterprise-Desktop-Shared-Package" version="10.0.19041.5915" processorArchitecture="amd64" language="neutral" buildType="release" publicKeyToken="31bf3856ad364e35" />
          </package>
        </update>
      </package>
    </assembly>
    do not forget to modify also the language mum !!

    I am playing with 22621 and it is similar to windows 10 ..left 678 packages only in the same way like we do it here ...

    BUT ....there is a BUT also and gives me a headache User Choice Protection is blocking Windows Sore from updating ... and i am nervous because i can not find a fix for that ...
     
  8. SunLion

    SunLion MDL Expert

    May 11, 2011
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    Thanks!

    I'll fix it.

    As for 22621, it's best to take it easy... Everything can be adjusted with small steps.

    Cheers
     
  9. SunLion

    SunLion MDL Expert

    May 11, 2011
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    Wow!!!

    Fixed!

    Work fine!

    Thank you @balanadi

    Here is the new set of modified .mum files from Windows 10.1904x.5917:
     

    Attached Files:

  10. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    #591 sainfo, Jun 7, 2025
    Last edited: Jun 7, 2025
    We are very happy that everything is great with you. But we would also like to be happy in our reality, in the 24H2 version. How can we use this knowledge base for our purposes?
     
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  11. balanadi

    balanadi MDL Senior Member

    Apr 24, 2014
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    The new update of the 24H2 is totally different , it can be done but takes more time to modify first 1742 and the one you update , before the new update replace the old one and it was easy to modify the mum files updating only what you want.

    I manage to do same for 22621 cause it still has the same layout of updating the mum (and manage the same procedure with 678 packages in services ...which is wow and fast ..) but i give up because of the User Choice Protection (my a....) which changes all the modification you would like to make to registry , applications , pdf and even to add your favorite browser .

    i will not continue with windows 11 cause i do not find it yet ready for day to day operation specially when i am going away with my job 6 months , it is hard to fix problems .

    Maybe latter when i will have time i will play again ... but not for a while ...
     
  12. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    #593 sainfo, Jun 7, 2025
    Last edited: Jun 7, 2025
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  13. Walcott

    Walcott MDL Novice

    Sep 25, 2010
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    Can you explain how to use these .mum files?

    TIA.
     
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  14. SunLion

    SunLion MDL Expert

    May 11, 2011
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    Basically with the scripts published by @balanadi in this link:

    https://forums.mydigitallife.net/th...ic-legacy-windows.86552/page-147#post-1880784

    The script uses the modified W10UI, so it pauses after extracting the files and before starting the integration, so that you can replace the modified .mum files in the folder where the LCU was extracted.

    In my test, using only Windows 10, with a custom script for my exclusive use, everything works fine, without errors.

    I am adapting the SD10_Renewed script for this method.

    Let's see if it works as expected.
     
  15. siliconbeaver

    siliconbeaver MDL Senior Member

    Apr 29, 2022
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    SunLion

    which test can I do? with what script version?

    I am eager to see if new change works on SD10, in size, in functionality.


    Thanks,
     
  16. balanadi

    balanadi MDL Senior Member

    Apr 24, 2014
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    I am glad that i give a reason for people to start modifying the mum files , as in my opinion is the easiest way to debloat as you follow microsoft way but delete from the mum what it does not make you happy ..
    As a basic information , màke sure you ðo not remove the basic packages included in each edition ...
    I will be back after 10 days from my cruise in the morning and hope i will find more people bringing some input and specially to find a way for 24H2 after you remove user choice the Store it does not update anymore ..it works but the downloads are blocket by this new clever (stupid in my opinion) decision from Microsoft that they want to force you update only ussing theyr stupid update ..
    Have a nice weekend and hope to hear good news soon
     
  17. SunLion

    SunLion MDL Expert

    May 11, 2011
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    I'm finishing the tests with SD10_Renewed.

    With pt-br_windows_10_enterprise_ltsc_2021_x64_dvd_f318268e.iso everything went well, in the Slim option.

    Now I'm going to test in default mode, to see what happens.

    Then I'll test with:

    - 19045.1826.220708-0121.22H2_RELEASE_SVC_REFRESH_CLIENTBUSINESS_VOL_X64FRE_PT-BR.ISO

    - en-us_windows_10_iot_enterprise_ltsc_2021_x64_dvd_257ad90f.iso

    As long as everything goes well, I'll make the new script available.

    Please wait...
     
  18. SunLion

    SunLion MDL Expert

    May 11, 2011
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    Have a great vacation!

    Enjoy your vacation and rest.

    Have a nice return too!

    Hugs