Windows 10 22h2 security update [KB5034441] fails to install with code: 0x80070643

I totally agree. Microsoft is sooo stupid.

yeah - not the answer.

My PC has a 500 MB recovery partition and i still have this error.

This worked for me . I used the Media Creation Tool and reinstalled Windows 10 . Microsoft does all the work , All you do is follow the instructions . I did NOT do a clean install . I opted to keep my files and apps but backed them up anyway. It is a time consuming method but you do not have to be a computer expert , because Microsoft does all the technical stuff. I did not read about this at the community . It was another forum for tech issues , but I figured if anyone can fix this then it would be Microsoft ,by installing the latest version of Windows 10 and it did. Try it ! All you have to lose is 5 hours of your life (it's a long process) . Start here https://www.microsoft.com/en-us/software-download/windows10  I'm running 2H22 . A reinstall of Windows 10 worked for me . Go to https://www.microsoft.com/en-us/software-download/windows10 to use the Media Creation Tool. Go down to " Create Windows 10 installation Media " and click "Download Now " . Follow instructions . I chose to keep my files and Apps but I backed up everything anyway before proceeding. The reinstall apparently repartitioned the hard drive since I have downloaded many updates ever since this reinstallation without incident . I have read that this has not worked for everyone . I have 2H22 Windows 10 . This method has the advantage of Microsoft fixing the problem instead of troubleshooting the partition by yourself . Hope this was useful

Given the timing (ie immediately following a software update). I’d be inclined to think it’s a software, rather that a hardware issue. Also I’d say that the behaviour is a bit too selective to be a hardware issue.

I would suggest a clean rebuild of the PC would be advised before you start spending the bucks.

@volume_z

already enabled ..