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

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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John DeV 170.2K 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

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  1. Anonymous
    2022-08-21T14:14:51+00:00

    Again, for all those having install failures please refer back to my post on August 14 in this thread about talking with Microsoft support and their recommendation of doing a repair upgrade to fix this problem. I finally did the repair as suggested and it worked while all other install fixes didn't. If you look through most of the threads on this subject, and I have since I've had the problem since mid June and was one of the original posters on this problem, you'll find that what works for some people won't for others. I disabled Malwarebytes and was able to install the July cumulative update. That didn't work for August. I finally tried the repair upgrade and as Microsoft said, this should work and it did. It took about 45 minutes to complete the entire procedure and the installation of KB5016629 was slow and paused in several places but it did complete successfully. Follow the directions carefully (specifically about not doing any updates during the install.... do them after the repair is completed) and hopefully you'll find success.

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  2. Anonymous
    2022-08-21T14:24:33+00:00

    Just wondering, a friend did a repair upgrade and said it messed up his desktop and a few apps on the reboot. Did you find this at all?

    Otherwise there's supposed to be a major upgrade within a couple of months, I might just wait for that.

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  3. Anonymous
    2022-08-21T14:47:42+00:00

    I had no problems. The desktop was just as I had it set and I tried running about a dozen or so apps (programs) and everything was working fine.

    I was going to wait for 22H2 also as it should be here on Sept 20 but then started to wonder if there would be any problems installing it with the current state of my system. So I finally figured I'd try it. I have backups from Macrium Reflect as a fall back if there were any problems. And you can rollback the install anytime up to 10 days if you need to.

    I'm sure there is a small subset of all Windows users who have problems after installing any update just as there are obviously quite a few having problems doing these cumulative updates. That's why backups should be a must for any user.

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  4. Anonymous
    2022-08-21T15:30:47+00:00

    I’m glad you got it installed with no problem and I make regular backups as well. But unless I’m missing something I don’t see a solution for the thousands of us that can’t get it installed.

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