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

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

  1. kyrcy

    kyrcy MDL Senior Member

    Feb 25, 2020
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    I get a few errors with the above script and en-us_windows_11_consumer_editions_version_25h2_updated_april_2026_x64_dvd_38233bf1.iso:

    ============================================================
    Checking Updates...
    ============================================================

    ============================================================
    Installing servicing stack update...
    ============================================================

    Deployment Image Servicing and Management tool
    Version: 10.0.28000.1

    Image Version: 10.0.26200.8246

    Processing 1 of 1 - Adding package Package_for_ServicingStack_1837~31bf3856ad364e35~amd64~~28000.1837.1.3
    [==========================100.0%==========================]

    Error: 0x800f081e

    The specified package is not applicable to this image.

    The DISM log file can be found at C:\Windows\Logs\DISM\DismSSU.log

    Deployment Image Servicing and Management tool
    Version: 10.0.28000.1

    Image Version: 10.0.26200.8246

    Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~amd64~~28000.1836.1.18
    [==========================100.0%==========================]

    Error: 0x800f081e

    The specified package is not applicable to this image.

    The DISM log file can be found at C:\Windows\Logs\DISM\DismLCU.log

    ============================================================
    Remove ProvisionedAppxPackages
    ============================================================
    Microsoft.DesktopAppInstaller_2025.926.104.0_neutral_~_8wekyb3d8bbwe

    Error: 15610

    Removal failed. Please contact your software vendor.

    ============================================================
    Remove OneDrive
    ============================================================
    The operation completed successfully.
    The operation completed successfully.
    The operation completed successfully.
    The operation completed successfully.
    The operation completed successfully.
    The operation completed successfully.

    Remove the Task registry key of OneDrive
    ERROR: The system was unable to find the specified registry key or value.
    ERROR: The system was unable to find the specified registry key or value.
    ERROR: The system was unable to find the specified registry key or value.

    Any ideas why?
     
  2. SunLion

    SunLion MDL Expert

    May 11, 2011
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    You are trying to edit:
    en-us_windows_11_consumer_editions_version_25h2_updated_april_2026_x64_dvd_38233bf1.iso

    But script 26H1_Creator_1.7 is for version 28000.

    For image 25H2, use script 2xH2_Creator_15.9.

    Good luck!
     
  3. kyrcy

    kyrcy MDL Senior Member

    Feb 25, 2020
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    #1683 kyrcy, Apr 26, 2026
    Last edited: Apr 26, 2026
    I tried 2xH2_Creator_15.9 with X23-81951_26100.1742.240906-0331.ge_release_svc_refresh_CLIENT_ENTERPRISES_OEM_x64FRE_en-us.iso and I again got an error:

    ============================================================
    Downloading missing Windows 11 2xH2 Updates...
    ============================================================


    Done.


    ###########################################################
    Prepare Updates to Integration
    ###########################################################
    D:\2xH2_Creator_15.9\UUP\25H2_Windows11.0-KB5082417-x64-ndp481.msu
    1 file(s) moved.
    The system cannot find the file specified.


    Done...

    Both ISOs were not detected and needed to be placed in the same folder as the script. Where is each of the Options explained in this post? What are PersonalTweaks?

    ===========================================================
    2xH2_Creator_15.9
    Configured Options at 25/04/2026, 23:08:26.09
    ===========================================================
    Running in NORMAL mode
    Selected Other ISO - Not configured in the script
    Integrate Drivers Into Install.wim
    Integrate Drivers Into Boot.wim index 2
    Enable Store
    Do not Remove ClickToDo - GetStarted - WindowsBackup
    Enable WindowsSearch
    Do not Remove Windows Defender
    Do Not REMOVE Edge
    Enable Net35
    Enable Modern Calculator
    Do not Remove WinRE.wim
    Do Not Enable MediaPlayer
    Don't Install Openshell
    Don't Customize Boot.wim
    Do Not Apply PersonalTweaks
    ===========================================================
     
  4. SunLion

    SunLion MDL Expert

    May 11, 2011
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    The images that the 2xH2_Creator_15.9 script automatically identifies are:
    - Windows_11_Enterprise_LTSC_2024 (26100.1742)
    - Windows_11_IoT_Enterprise_LTSC_2024 (26100.1742)
    - 26100.1742.240909-0928.GE_RELEASE_SVC_REFRESH_CLIENTBUSINESS_VOL
    - 26100.1742.240909-0928.GE_RELEASE_SVC_REFRESH_CLIENTCONSUMER

    These images should have the following in their name:
    - *windows_11_enterprise_ltsc*.ISO
    - *windows_11_iot_enterprise_ltsc*.ISO
    - *CLIENTBUSINESS*.ISO
    - *CLIENTCONSUMER*.ISO

    Any other images should be placed in the main folder next to the script, and when asked if you want to use this image, answer yes.

    Try it and see if it works for you.
     
  5. kyrcy

    kyrcy MDL Senior Member

    Feb 25, 2020
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    #1685 kyrcy, Apr 26, 2026
    Last edited: Apr 26, 2026
    It works if it is in the same folder. Any ideas about the error? And are the Options explained somewhere in the post?
     
  6. SunLion

    SunLion MDL Expert

    May 11, 2011
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    Please note that the script was written to use 26x00.1742 images as a base.

    Other images can be used. It has not been tested here with other images.

    The options/questions are self-explanatory, in a very simple way, during the use of the script.

    There is a _HowToUse.txt file inside the package with general instructions.
     
  7. kyrcy

    kyrcy MDL Senior Member

    Feb 25, 2020
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    I get errors with X23-81951_26100.1742.240906-0331.ge_release_svc_refresh_CLIENT_ENTERPRISES_OEM_x64FRE_en-us.iso (26100.1742) and 2xH2_Creator_15.9. Some of the options are not self-explanatory, at least to me, for example WinRE.wim, Boot.wim and PersonalTweaks.
     
  8. Shrinklier

    Shrinklier MDL Novice

    Jul 7, 2022
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    Which errors do you get? Share the log...

    Regarding explanations:
    WinRE – Windows Recovery Environment, used to repair Windows if something goes wrong (startup issues, corruption, reset options), you can choose to keep or remove it.
    Boot.wim – The "setup" part of Windows (the installer). The script can modify it to bypass Windows 11 system requirements, integrate drivers (for the install stage only), or use the old setup instead of the newer Windows 11 one.
    PersonalTweaks – Here you can add any tweaks that are not included in the main script. These are usually based on personal preference, so you can ignore this if you don’t need anything specific.
     
  9. SunLion

    SunLion MDL Expert

    May 11, 2011
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    Thank you for your help!

    Hugs
     
  10. kyrcy

    kyrcy MDL Senior Member

    Feb 25, 2020
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    I already posted some of the errors in previous replies. By the way, the _Start.cmd scripts fail to run and I need to use the _Start_Nsudo.cmd ones.
     
  11. SunLion

    SunLion MDL Expert

    May 11, 2011
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    You're probably not using Windows 10 as your host system.

    When you use start-nsudo, the log file is not created automatically. In this case, at the end you must select everything, copy and paste it into a text file, and save it to have the log file.
     
  12. Shrinklier

    Shrinklier MDL Novice

    Jul 7, 2022
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    @SunLion
    I unified the Start script so it works the same on both Windows 10 and 11, using NSudo for elevation while still preserving logging (no need to manually copy output anymore).
    Since the entire script is now running as TrustedInstaller, all internal uses of %NSUDO% in the main scripts should be removed, they’re no longer needed.

    You can replace the existing Start script with this:

    Code:
    @echo off
    cd /d "%~dp0"
    
    :: Ensure NSudo exists
    if not exist "%~dp0tools\amd64\NSudo.exe" if not exist "%~dp0tools\x86\NSudo.exe" (
        echo.
        echo ===========================================================
        echo NSudo not found!
        echo ===========================================================
        echo.
        pause
        exit /b 1
    )
    
    :: Detect architecture
    if exist "%WinDir%\SysWOW64" (
        set "HostArchitecture=amd64"
    ) else (
        set "HostArchitecture=x86"
    )
    
    :: Run as TrustedInstaller
    whoami /groups | find "S-1-5-80-956008885-3418522649-1831038044-1853292631-2271478464" >nul || (
        "%~dp0tools\%HostArchitecture%\NSudo.exe" -U:T -P:E -UseCurrentConsole -Wait "%~f0" %*
        exit /b
    )
    
    bin\quickedit.exe 0
    
    echo Logging output to 2xH2_Creator_15.9.log ...
    call 2xH2_Creator_15.9.cmd 2>&1 | bin\tee.exe 2xH2_Creator_15.9.log
    Also you can move the version variable to the Start script and then replace hardcoded version number with the variable, easier to maintain.
     
  13. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    #1693 sainfo, Apr 27, 2026
    Last edited: Apr 27, 2026
    Have you tried using this script yourself? Did it work?
    That's very interesting. If possible, could you please show me the finished solution?
     
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  14. Shrinklier

    Shrinklier MDL Novice

    Jul 7, 2022
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    I tested it with Win 10 as host, should also work with Win 11. The non-nsudo elevation script is very "hacky", Win 10 is more forgiving than 11.
    If you want to try it simply replace the entire code in the Start script with the one i shared, and remove all %NSUDO% calls in the main script.
    This also means that you don't need to run the Start script as admin, since it will relaunch itself already elevated.
     
  15. SunLion

    SunLion MDL Expert

    May 11, 2011
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    Thank you so much for your help!

    I'll run some tests.

    Best regards
    :)
     
  16. kyrcy

    kyrcy MDL Senior Member

    Feb 25, 2020
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    #1696 kyrcy, Apr 27, 2026
    Last edited: Apr 27, 2026
    Yes, I only tried running the script under Windows 11.
     
  17. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    I see, that's why I asked, because I feel like this script isn't working for me. When I run it, several windows open that don't work. Thanks for the advice. Try running the script without Administrator privileges and remove all NSudo entries from the main script.
     
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  18. Shrinklier

    Shrinklier MDL Novice

    Jul 7, 2022
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    If you try to use it in a custom version of the script make sure that the file names in the logging area are correct, this is the fragile part. Make sure the Nsudo path is correct. If all is correct, after you run the Start script you should see the main script.
    Add "pause" at the end of the script to keep the terminal open and see which error you get.
     
  19. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    Got it, I'll give this script a try, as you suggested.

    Actually, I'm using my own version of the script, and everything works perfectly.

    https://forums.mydigitallife.net/th...sic-legacy-windows.90039/page-84#post-1910601

    I just liked the idea of running the main script, but I'm having some issues with it right now.
     
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  20. sainfo

    sainfo MDL Addicted

    Dec 6, 2021
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    #1700 sainfo, Apr 28, 2026
    Last edited: Apr 28, 2026
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