I can't install .NET Framework 3.5 on my Windows 11 laptop.

Anonymous
2024-04-05T14:13:11+00:00

I have tried to turn on the windows features for .NET framework 3.5 and install it through the command prompt, but nothing seems to work.

Windows for home | Windows 11 | Install and upgrade

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  1. Ramesh 182K Reputation points Volunteer Moderator
    2024-04-14T11:14:55+00:00

    Please open the folder "C:\Windows\Minidump" and copy the available minidump files to the desktop. Then, share them via OneDrive so they can be analyzed.

    After uploading the mini dumps, please do a repair installation again, as we've now fixed the original issue (0x80070057).

    See:

    How to run In-place upgrade in Windows 11 - Microsoft Community:

    https://answers.microsoft.com/en-us/windows/forum/all/how-to-run-in-place-upgrade-in-windows-11/4d469147-2747-4dcb-88a4-aae9273a4500

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  2. Anonymous
    2024-04-14T11:01:23+00:00

    Thank you for your patience.

    I tried to run the first line of the command multiple times. However, it does not let me finish the command as this blue screen appears and then my laptop restarts.

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  3. Ramesh 182K Reputation points Volunteer Moderator
    2024-04-14T03:22:58+00:00

    That's because you missed an important DISM command after mounting the ISO. There are two commands, but you ran only the 2nd one.

    First, open this PC and determine which drive letter has been assigned to the ISO. Install the CAB, as mentioned in the article. Then, run the 2nd command. It's not that difficult. Paying more attention is all that's needed. Read the article and follow the steps exactly as mentioned.

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  4. Anonymous
    2024-04-13T19:10:05+00:00

    I used the mount option with PowerShell and then tried to use a command by opening a command prompt and typing dism /online /enable-feature /featurename:NetFX3 /All but I still have the same problem

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  5. Ramesh 182K Reputation points Volunteer Moderator
    2024-04-13T18:47:35+00:00

    If the "Mount" option doesn't appear in the right-click menu, mount using PowerShell.

    https://www.windowscentral.com/how-mount-or-unmount-iso-images-windows-10

    Mount-DiskImage -ImagePath "c:\users\alexa\downloads\win11_23h2_english_x64v2.iso"

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