Windows update (KB5034441) Error (0x80070643)

Imressive storage setup and curious. Why are there a tens of gigs of space marked as Free on disks 0, 5 and 6 (I suppose these are SSD drives)? Is this machine dual-boot? Do you have a Linux installed on it? O, I got it - you left 10% of free space for SSD overprovisioning. I am sure you can use about 1% of it for the RE partition :) I guess this is why Microsoft standard instruction with shrink did not work for you.

And list volume output please? And also would be nice to see reagentc /info output as well.

It seems a recovery partition is yet to be created on disk 0. There is 84GB of free space on it which of less than 1GB you can use for RE partition.

You can follow the instruction from Microsoft a bit tuned to your setup.

reagentc /disable
diskpart
select disk 0
create partition primary id=de94bba4-06d1-4d40-a16a-bfd50179d6ac size=996
gpt attribute=0x8000000000000001
format fs=ntfs label=WinRE
list partition
exit

Please note that size=996 part of the create partition command absent in Microsoft's instruction - this is because you already have a free space on your boot drive and you do not shrink an existing partition to the left to make one.

The next step is reagentc /enable. If that is successful then you can restart your machine and repeat attempt to install the KB5034441.

LEWCARVER - I did successfully install Update KB5034441 after I used a third party partition manager to upsize the Recovery Partition. I assumed, maybe incorrectly, that upsizing the Recovery Partition would not change its ID or attributes. However, I do not see the Recovery Partition listed any longer and my 100 MB EFI System Partition is now listed in Disk Management as separated from Boot Drive C (but not in diskpart) and given drive letter "Z" in File Explorer. I've clearly screwed up somewhere along the line. sfc /scannow did not fix the problem(s). Rather than risk a non-bootable system, I think it's time for a Repair Installation.

vayvanne - here you go:

Were you able to complete the Windows Update KB5034441?

First, I assume you assigned the GPT Partition ID and the GPT Attributes for your new Partition properly. Read through the details of the 35 pages if you are not sure for details on how this is done. If these steps are not done right you will not have a recognized Windows Recovery Partition. The ID and Attributes can be added using Diskpart, if you are familiar with the commands.

If the Partition IS setup right then proceed. Or, proceed anyway to Hide the Partition. It will still be visible in Disk Management.

You could use MiniTool Partition Wizard (Free Version) to fix this, I believe. Download the latest version, install freeware version and start the App (Program). Likely your Boot or OS Drive is Disk1 (in this program).

Left-click on the 96 MB Partition shown on the Disk1 or the OS Drive "Z". This will highlight it blue.

Right click on the blue high lighted Partition (again 96 MB "Z").

From the menu that pops up select "Hide Partition." This will hide it from being displayed in File Manager and having a Drive Letter. You are not done yet.

This will place your request for completing this change in the Operations Pending on the Left side of the open Window. Now you have to Accept the change by clicking "Apply." Your request will be completed. You can restart your PC and see if the Partition is no longer visible.

Good Luck.

Open diskmgmt.msc and just copy paste the window screenshot here :)

What was that 3rd party partition app you mentioned used please? You need to be accurate with these kind of operations even having a full backup.