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Windows 11 Cannot install update KB5016629

Anonymous
2022-08-13T11:28:57+00:00

Have Windows 11 (upgrade from Win 10) - cannot install KB5016629 (and before it KB5015814) - tried all MS recommendations but still doesn't install. Have now hidden it using WUSHOWHIDE. My WINVER is currently showing Version 21H2 (OS Build 22000.739). When the update tries to install it goes up to 100%, reboots and then it says, "Something didn't go as planned. No need to worry - undoing changes. Please keep your computer on", then it takes about 10 minutes undoing all the changes and sets everything back to where it was - BUT when I re-boot again, it again tries to install the updates and does EXACTLY the same.

I have looked at MS sites and other windows-related sites (like https://howtofixwindows.com/windows-11-update-failed-to-install/…) I have followed all the instructions, even downloaded and installed the update manually (from the MS Update catalogue), it appears to install, gets to 100% and then I get EXACTLY the same error message. It's a bit concerning, as the same things happened with KB5015814 and I thought the cumulative update in KB5016629 would cover everything that I couldn't install with KG5015814, but as neither will install I am still left with an old build.

Looking at these forums and other general posts on the Internet and the MS Feedback forum, I know that I am not the only one having these problems

Windows for home | Windows 11 | Windows update

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  1. John DeV 150K Reputation points Independent Advisor
    2022-08-13T12:07:40+00:00

    Hello Ladams_888,

    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.

    Please try the following methods below if it helps.

    1. If you have Malwarebytes installed on your system, Kindly uninstall it.

    Press Windows key+I to open Settings

    Select Apps > Apps and features

    Find Malwarebytes in the list then click Uninstsall

    1. Turn off .NET 3.5

    Open Control Panel > Programs

    Click "Turn Windows feature on or off"

    Untick ".NET Framework 3.5"

    Click Ok

    Wait for the process to complete

    Restart your computer then try to install the update again.

    If this fixes the issue, Kindly try to turn on .NET 3.5 again.

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

    Kind regards,

    John DeV

    Independent Advisor

    27 people found this answer helpful.
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  1. Anonymous
    2022-08-13T12:31:51+00:00

    I'm having the same issue on a virtual Windows 11 ARM machine. I disabled .Ney 3.5, rebooted, and the update failed for me too.

    1 person found this answer helpful.
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  2. Anonymous
    2022-08-13T21:51:12+00:00

    Hi John,

    Did as you said and removed Malwarebytes and turned off Net 3.5 and I think it has worked. Funny thing is that KB5016629 does not show in the Update history, but it DOES show in Control Panel, Programs and Features as an installed Update. My WinVer is now 22000.856. IS that the correct build? If so thank you so much for suggesting something different which actually seemed to work - I never want to see "Something didn't go as planned. No need to worry - undoing changes. Please keep your computer on" again!

    Linda Adams

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  3. John DeV 150K Reputation points Independent Advisor
    2022-08-13T22:30:12+00:00

    Hello Ladams_888,

    Great, I am happy that worked. If you do not have any concerns, feel free to mark only the response that helped you as most helpful and have a moment to rate my support I would appreciate it. This will help other people who are facing the same problem.

    You are most welcome. Stay safe and have a great weekend!

    Kind regards,

    John DeV

    Independent Advisor

    1 person found this answer helpful.
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  4. Anonymous
    2022-08-14T06:37:44+00:00

    I had the same problem. Instead of having to uninstall Malwarebytes. all I had to do was turn off all the Real Time protection. Once it installed, I turned it all back on. Thank you for pointing me towards Malwarebytes as the problem. This was really starting to bother me spending the time uploading, installing, then having it say Something went wrong. In my case, Malwarebytes was the culprit.

    8 people found this answer helpful.
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