Wednesday, April 1st 2026
Microsoft Issues Emergency Fix for Windows 11 Update Installation Errors
Late last week, Microsoft released its KB5079391 non-security feature update for Windows 11, which was officially pulled due to widespread installation errors. Today, the company is issuing the out-of-band KB5086672 update to address this problem, as Microsoft has identified the source of the issue and the update can now be safely applied. This latest out-of-band KB5086672 update includes the KB5079473 package released on March 10, KB5085516 released on March 21, and the previously pulled KB5079391 released on March 26. Microsoft has combined all of these into the new KB5086672 package, which addresses the issues that appeared and introduces a variety of new features. Finally, the old installation error message, "Some update files are missing or have problems. We'll try to download the update again later. Error code: (0x80073712)," has been resolved for good.
Microsoft notes that this out-of-band update is available through Windows Update for devices running Windows 11 that have already installed KB5079473 or a later update. It is also available for manual download from the Microsoft Update Catalog. Currently, there are no known issues with this update, and if any arise, Microsoft will highlight them on their support documents website. Interestingly, KB5086672 is one of the first steps by Microsoft toward resolving the issues users have experienced with Windows 11 updates, and hopefully just the beginning of the overhaul that Microsoft has promised. Future non-security feature updates could also focus on other quality-of-life improvements, and installation errors should become less common.
Sources:
Microsoft, Thanks FR3D1 for the tip!
Microsoft notes that this out-of-band update is available through Windows Update for devices running Windows 11 that have already installed KB5079473 or a later update. It is also available for manual download from the Microsoft Update Catalog. Currently, there are no known issues with this update, and if any arise, Microsoft will highlight them on their support documents website. Interestingly, KB5086672 is one of the first steps by Microsoft toward resolving the issues users have experienced with Windows 11 updates, and hopefully just the beginning of the overhaul that Microsoft has promised. Future non-security feature updates could also focus on other quality-of-life improvements, and installation errors should become less common.


24 Comments on Microsoft Issues Emergency Fix for Windows 11 Update Installation Errors
The average joe can beta test for me instead.
I would recommend Windows 10 to you. However, it hasn't exactly covered itself in glory in the past. One out-of-the-box bug followed another. One thing is certain: Linux, along with macOS, is currently the better option when it comes to a secure and stable system. That should give the AI enthusiasts in Redmond something to think about.
Regards,
Fred.
Microsoft has a veritable monopoly, they have force-fenced everyone into abandoning Windows 10 by stopping support, and now the product which everyone is FORCED to use (yes, it is a choice, but is it really?) is malfunctioning almost daily, causing data loss, downtime because of being locked out or stuff failing, whatever else.
There's absolutely no accountability. This is just wrong in every way. Software makers should not be allowed to get away with malfunctioning products just because the EULA says so. That's unethical, and should be illegal.
Regards,
Fred.
But, come on, is this really a choice, when official Windows 10 support is stopped unless I pay extra, except for the EU where the consumer laws seem to be a bit more consumer-friendly? Almost no one bought Windows 10 IoT to start with. Who knew that Redmond was going to dump an incomplete, badly performing, constantly broken OS on their heads and force a transition to that? Forcing me to buy another version of the old software just to get support, well that's just taking advantage of a monopoly. I mean, real Linux and MacOS user-base numbers are a joke when compared with the Windows user-base.
By pushing me into the IoT option, or ESUs for that matter, I'm being forced to pay double/more just to keep things stable. Windows 11 is really not offering anything substantially new or so much better. I believe that Microslop needed a new revenue source from a new product because almost everyone had already paid for the previous version, so this was just a money-making gimmick.
Personally, I still don't see the NEED or additional value that convinces me to buy Windows 11 at this time. But, I'm still paying for the "privilege" for continuing to use something I've already paid for.Haha! Windows is not my property, you're completely correct. But, the right to use Windows 10 should not be taken away by force, without a viable alternative. Am I to understand that an OS which does not work properly with no other option, is fair to consumers, especially businesses who have probably paid a lot for their licenses? Legal word-wrangling aside?
Ist attempt failed to install
2 attempt looked ok, asked for restart, went back to downloading & installing xxx6672 (again?)
3 attempt seemed to work, took ages most reboots ever - a 2 then a 3
On W11 launch another restart required and more shenanigans, then restart
Then OK, maybe
Like butter /s
Edit: PS under "Other Updates" now have "Secure Boot Allowed Signature Database (DB) Update", today's date.
Well done MS, bravo.
Microsoft Issues Emergency Fix for Windows 11 Update Installation Errors AGAIN
regardless if it is 1st april joke or not. w11 pro as a hole operating system with up to 5 times warm boots for a single update in past weeks is a joke.or you are not allowed to install two software at the same time. that also implies uninstalling and reinstalling. total time waste.
i'm used to install, uninstall, update, change configuration files without worrying about a shit package manager. i look at ubuntu, linux mint, w10 pro and w11 pro and w10 home oem especially.
When they promised to improve quality.
I don't know if and how corporations would swallow that. But I know that almost all enthusiasts and DIYers like us on TPU would be *extra happy*, with hardly any complaints.
And what would regulators possibly be able to do about it?
And, when I say Governments, I mean literally every government administration of every country. Yes, it will give rise to risk/vulnerability because making it open source *before* sealing all the holes/weaknesses and putting all safeguards in place is dangerous for the entire eco-system, but it is what it is. We just have to make the best of a rotten situation as best as we can, especially keeping in mind the inherent lack of understanding and stupidity of people in power everywhere.
Thanks for making me think about this :)
So get ready for your new job: cycle on exercise bikes all day long, in order to generate electricity and then earn currency for it.
en.wikipedia.org/wiki/Fifteen_Million_Merits