Microsoft warns people to uninstall Windows 11 update that kills apps

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Microsoft has been forced to warn users to uninstall Windows 11 update KB5012643 because it appears to cause some apps to crash, especially if they’re based on the .NET 3.5 framework.

As WindowsLatest explains, KB5012643 – which is an optional update for Windows 11 – brings several fixes to the operating system, but some people report that applications that rely on the .NET 3.5 framework – which are quite numerous – have crashed since installing the update.

Although not all users were affected and not all applications using .NET crashed, the problem is widespread enough that Microsoft sent a rather humiliating message to users, telling them to uninstall the update.

How to Uninstall Windows 11 KB5012643 Update

To uninstall the update, open the Start menu, then type “Windows Update Settings”. From there, click on “Windows Update” and then on “View update history”.

Then click on ‘Uninstall update’ and select KB5012643 then click on ‘Uninstall’. Hopefully this fixes the issue, however, you may find that other issues fixed by the KB5012643 update have now returned.

Hopefully, Microsoft will release a new KB5012643 update that fixes these issues without introducing any additional issues.


Analysis: Uh oh, not yet, Microsoft

man sleeping under his laptop

(Image credit: Lipik Stock Media/Shutterstock)

Having to warn users to uninstall an update is embarrassing enough at the best of times, but for Microsoft that humiliation is even more acute, as it brings back bad memories of a few years ago when the company was going through a release period more and more broken Windows 10 updates.

These dubious Windows 10 updates, which caused more problems than they solved, did a lot of damage to Microsoft’s reputation, as well as to Windows 10, which until then was seen as a return to form after the unloved mess that was Windows 8.

Anything that reminds people of this unfortunate time will not be good for Microsoft. There have been some notable Windows 11 issues recently, so the company certainly doesn’t want people to think the bad old days of faulty Windows updates are back – especially if it means they hold back on upgrading. to Windows 11 because of this.

At least there is good news. As KB5012643 is an optional update that users must install manually, this means that the number of users potentially affected will be much lower than if the update were mandatory and installed automatically.

Microsoft’s prompt response and transparency on this issue, despite its embarrassing nature, is also to be commended and will help minimize the effects of this issue. Hopefully, this is just a problem, and not an indication that Windows 11 updates might start breaking more things than they fix.

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