Windows 11 Cannot install update KB5016629

Anonymous

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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Answer accepted by question author

John DeV 170.2K Independent Advisor

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.

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

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

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62 additional answers

Anonymous

2022-08-17T04:50:24+00:00

Hello, I'm one of those unfortunate few whose pc was messed up by that update. Half my apps wouldn't function at all, Start menu disappeared, couldn't sign on to Microsoft. After much investigation, I had to reset the computer after uninstalling the last two updates were futile. But it worked! G.K., Portland, Or.
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Anonymous

2022-08-17T04:52:25+00:00

.......and by the way, it gave me the option to keep my files or not! Score
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Anonymous

2022-08-17T16:09:27+00:00

Instead of uninstalling programs and such, shouldn't MS be fixing the issue? Is MS going to release cumulative updates that install and not full of bugs?
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4 people found this answer helpful.

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Anonymous

2022-08-17T18:20:40+00:00

Got Aug Win11 update up to 95% (and 3 re-starts) then it rolled back changes. Malwarbytes disable worked for me. First set MB settings not to start on power up (as Win update restarts a few times) then 'Close' MB from icon tray. Did not un-install. Reboot then update Win11 as usual. (Switch MB back on, and auto start when done). I spent ages trying MS stock answers but none worked. Update issues with AV progs are not unusual (Win 95 on) but in the past MS has flagged it up, within a few days. Times change. Thanks for the tips; well done all.
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