Windows update (KB5034441) Error (0x80070643)

Yes, in my opinion, they (Microsoft) are NOT going to offer some Automatic Update or one-touch easy fix. This one you are going to have to fix it yourself, or just ignore the update as it really has no effect on operation for 98% of PC's.

If you read the pages of this post, you will find there are several Essential Steps needed to correct the issue. Two of those are Resizing your Recovery Partition and manually pointing (directing) Microsoft Windows 10 to the correct Recovery area (on your Boot Drive C: inside the Windows Program first, or moved to a sized Recovery Partition. Sometimes you need to find (get) the essential files that are part of the Recovery. Without these files the Update will NEVER complete.

Some of the directions located from Page 38 to 44 also give a solution that is a complete replacement of Windows 10 Operating System by downloading the proper Windows 10 OS on a Thumb Drive and installing Windows 10 again (saving your programs and data without loss). This is the method I would recommend, especially if you are not familiar with Recovery Partitions, reagentc, and Command Com working. Making Windows find the needed Recovery Files is tricky.

Read the pages from this post, you might need some help in completing the steps needed, but some are easy.

In that case, I would say to go ahead with the procedure in the tutorial and after everything is finished, check for updates and let the system install then at that time. Just follow the tutorial.

The Download updates is grayed out for me and I cannot get this fixed. It seems to be affecting the scanner on my printer and yes i have uninstalled and reinstalled as well the complete shut down several times How do we get this fixed

Also experiencing this issue using Windows 10 LTSC which should still be supported for years to come.

Did a clean install of Windows 10 IoT Enterprise LTSC (version21H2, build 19044.4529), still run into this issue.

I am fully on your side ! ... and btw. even an increase in size IS NOT HELP !

I got two PCs (64bit) A and B with both identical boot file size; 3x the required min. size !

On A (Win10pro / i7-3770) the issue has suddenly been resolved within an further autom. Win-update within the first week.

On B (Win10home / XEON-3350) the issue is permanent and could NOT be resolved by changing size ! Delete and terminate Win-Restore file can help. But as soon as you recreate Win-Restore-files, for any of your discs (go to Settings -> System -> About > Advanced System Settings -> System Protection) the issue comes back ...

remains sticky only with WIN-10-home edition, solved itself on WIN-10-PRO edition.