Error when trying to install .NET Framework 3.5

Anonymous
2024-02-21T15:31:43+00:00

A few days ago, I noticed I couldn't run some applications because of .NET Framework 3.5 not being installed on my system.

I downloaded the installer from https://www.microsoft.com/en-US/download/details.aspx?id=21 but when I tried to run the installer,

It said this:

I tried pressing 'Tell me how to solve the problem' but the error wasn't present there. I also tried to find information of the error code using slui.exe but it said it could not find any information from it. Optional features also doesn't work because it doesn't list a single feature:

mscoree.dll is also missing which means I can't run applications like PowerShell or any files that requires mscoree.dll.
Windows Update and Windows Update troubleshooter also doesn't work.

'SFC /scannow' and 'DISM /Online /Cleanup-Image /RestoreHealth' doesn't change anything either.

What can I do to fix those errors?

Windows for home | Windows 10 | Performance and system failures

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  1. John DeV 153.3K Reputation points Independent Advisor
    2024-02-24T10:52:01+00:00

    Thank you for updating me with that information. Please try to download and run the .NET Framework Repair Tool.

    https://www.microsoft.com/en-us/download/detail...

    After that, please try all the Options in the link in my first reply.

    Kindly let me know if this helps or if you have any further concerns.

    Kind regards,

    John DeV

    Independent Advisor

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  1. John DeV 153.3K Reputation points Independent Advisor
    2024-02-21T16:03:52+00:00

    Hi, good day! I'm John Dev a Windows user like you and I'll be happy to assist you today. I know this has been difficult for you, Rest assured, I'm going to do my best to help you.

    If you have a third-party VPN or Antivirus installed, please try to temporarily uninstall it then check if the issue persists.

    Please check and try Shawn Brink's tutorial guide in the link below on How to Install .NET Framework 3.5 in Windows 10. Please see Option Six.

    https://www.tenforums.com/tutorials/140142-inst...

    Kindly let me know if this helps or if you have any further concerns.

    Kind regards,

    John DeV

    Independent Advisor

    Standard Disclaimer: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

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  2. Anonymous
    2024-02-21T16:26:08+00:00

    How can I build a Windows 10 ISO that is the exact same build as what is currently installed?

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  3. John DeV 153.3K Reputation points Independent Advisor
    2024-02-21T20:56:01+00:00

    What is your current Windows version and operating system? Press Windows key+R to open Run then type: winver

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  4. Anonymous
    2024-02-22T07:24:21+00:00

    WINVER doesn't seem to provide much information, so I'll send the one from Settings > System > About > Windows specifications:
    Edition Windows 10 Pro

    Version 22H2

    Installed on ‎12/‎7/‎2019

    OS build 19045.3930

    Experience Windows Feature Experience Pack 1000.19053.1000.0

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