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!
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24 Comments on Microsoft Issues Emergency Fix for Windows 11 Update Installation Errors

#1
Quicks
LOL, Microslop strikes again.
Posted on Reply
#2
TheDeeGee
I'm so glad i set group policy to delay updates by 30 days.

The average joe can beta test for me instead.
Posted on Reply
#3
mechtech
But does it hurt more than it helps??
Posted on Reply
#4
FR3D1
Ninja Cat
@mechtech
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.
Posted on Reply
#5
StormLightningSL
I don't understand how there is no regulatory oversight on this.

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.
Posted on Reply
#6
FR3D1
Ninja Cat
StormLightningSLthey have force-fenced everyone into abandoning Windows 10 by stopping support
Do I understand you correctly; Redmond is to blame? Besides ESU (the first year free in the EU!), there's IoT LTSC with support until 2032. If someone is dependent on Windows, they have a choice. But people prefer convenience. And of course, it shouldn't cost anything.

Regards,
Fred.
Posted on Reply
#7
TumbleGeorge
Why do you still think that a Windows computer is your property? After it became just a "computer" many years ago. So you shouldn't be angry. You accept the risk of your own information being constantly operated with someone else's operating system and applications.
Posted on Reply
#8
StormLightningSL
FR3D1Do I understand you correctly; Redmond is to blame? Besides ESU (the first year free in the EU!), there's IoT LTSC with support until 2032. If someone is dependent on Windows, they have a choice. But people prefer convenience. And of course, it shouldn't cost anything.

Regards,
Fred.
I agree with what you point out.

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.
TumbleGeorgeWhy do you still think that a Windows computer is your property? After it became just a "computer" many years ago. So you shouldn't be angry. You accept the risk of your own information being constantly operated with someone else's operating system and applications.
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?
Posted on Reply
#9
Drash
WU xxx9473 already installed so WU shows xxx6672 available:
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.
Posted on Reply
#10
FierceRed
How many more times do I have to post this in 2026?

Posted on Reply
#11
HLB
StormLightningSLI don't understand how there is no regulatory oversight on this.
Regulatory capture. Also, good old lobbying being basically legalized corruption. Politicians are either corrupt, spinless or nuts (or a combination of these three). Welcome to corporate dystopia.
Posted on Reply
#12
maxli86
Here we go again, monthly Windows update is not to fix or update things but to break the OS.
Well done MS, bravo.
Posted on Reply
#13
mate123
I think this is the aprils fools article :D
Posted on Reply
#14
_roman_
I was not sure if I read it already so I had to double check the date. it says "today".

Microsoft Issues Emergency Fix for Windows 11 Update Installation Errors

i prefer:

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.
Posted on Reply
#15
AleksandarK
News Editor
mate123I think this is the aprils fools article :D
Nope, look at Microsoft support docs in the source. They posted it late March 31
Posted on Reply
#16
EsaT
AleksandarKNope, look at Microsoft support docs in the source. They posted it late March 31
And Microsoft already kep their April Fools' Day:
When they promised to improve quality.
Posted on Reply
#17
Bigshrimp
StormLightningSLI don't understand how there is no regulatory oversight on this.

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.
Corruption is the reason. It's the Wild Wild West for big business nowadays. They can get away with pretty much anything as long as the government is happy.
Posted on Reply
#18
Wirko
StormLightningSLBut, 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.
As a thought experiment, imagine that MS today announces the end of Windows. Six more months of updates and support, money back for those who bought Windows in the last six months, then you are on your own. Just use MS's cloud services from any client of choice if you wish.
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?
Posted on Reply
#19
Prima.Vera
Not even Windows Me had that many issues, and boy, that was a bug fest.
Posted on Reply
#20
StormLightningSL
WirkoAs a thought experiment, imagine that MS today announces the end of Windows. Six more months of updates and support, money back for those who bought Windows in the last six months, then you are on your own. Just use MS's cloud services from any client of choice if you wish.
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?
That's a very interesting experiment. While what I suggest may not fit every similar case, in this instance I suggest that Windows as a product is too big to be allowed to be taken off the market, at least in terms of availability. Because this is one product out of a portfolio, but being one of the most critical products that runs literally every computer on the planet, the only way out that seems sensible is if Governments take over the product, makes it semi-Open Source, and control/support the availability of a stable build. There's almost no other workable solution.

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 :)
Posted on Reply
#21
FanlessOC
"has been resolved for good" lol yeah right uhuh
Posted on Reply
#22
Hyrel
Installing a Windows update these days feels like risking for an experimental pre-alpha version.
Posted on Reply
#23
Wirko
HyrelInstalling a Windows update these days feels like risking for an experimental pre-alpha version.
Sure but do have some patience, the coding AI will learn from its own mistakes, it just needs a little time. (and a square kilometre of silicon) (and electricity to power that square kilometre of silicon)
Posted on Reply
#24
Grimling
WirkoSure but do have some patience, the coding AI will learn from its own mistakes, it just needs a little time. (and a square kilometre of silicon) (and electricity to power that square kilometre of silicon)
And AI will need us to produce the necessary energy to run itself, since we are blowing up all the oil industry.
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
Posted on Reply
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