Yep, a known issue.
Fix error 0x80070643 for Windows 10 KB5034441 update - Your Windows Guide
Windows 10 KB5034441 security update fails with 0x80070643 errors (bleepingcomputer.com)
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I keep trying install this update yet it keeps failing. I already ran troubleshooter said it resolved the issue but the error persists. I also disabled my antivirus and tried again still did not work And I keep getting error (0x80070643) Is this a known issue? All the other updates installed fine without issue.
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I have Bitdefender and Malwarebytes. I closed the latter and did the .NET Framework Repair Tool, but it didn't fix it.
Nothing new there, "a large amount of their userbase is gonna remain effected and annoyed at them" and this has been the case since the 1970s. Most purchases of MS products are authorized by 'empty suit' types, MS know this and know that the vast majority of users have no say in this. MS have never given a damn about this update stuff, let the users suffer.
I hate it how the programmers itself don't know what's going on even tho they're the one putting this update out there and somehow the install ain't working.. Is 2020 (and all years after that) everyone became so lazy they don't even test their programming stuff out ... Or honestly idk... still... they have to fix this since it will give errors later on..
I tried many ways to install it but it seems impossible to do so
Hopefully the issue will be resolved soon.