Security Update for Windows 10, 2024-11, KB5048239 getting error 0x80070643 when installing

No! It doesn't work! I disabled BitLocker, repartitioned the system and recreated the recovery partition with 4 gb, updates install but return with each request or reboot of the system.

Simon wrote: I think that 400gb of free space can be enough for 2 updates of a few mb.

The update probably is done in a two steps:

1. add the update's files into the partition, consuming over 202 MB, if there is free-space on the disk-drive;
2. delete the superseded 200 MB of files.

So, at the end, the percentage-used has increased by 2 MB, if step #1 completed without running out of disk-space.

Compare to opening the boot of your vehicle, and adding the "winter sports" gear BEFORE removing all the "summer vacation" gear. Sometimes, you cannot do these two steps in this order, because the space inside the boot in insufficient to temporarily hold both seasons of equipment.

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Simon,

from your second image, I see that you have "Windows 10 22H2".

However, Microsoft Support for this "2022" version of Windows ended in October 2024. I recommend that you download the "24H2" version (writing either to dual-layer DVD-recordable media or to an (at least) 8GB USB memory-stick). Then, run the "setup.exe" in the root-folder of the image, and choose to "update" to the current level. It is possible that applying this update will also update the "WinRE" partition, which is your goal. .

From your first image, I see:

where the highlighted row seems to confirm that you have sufficient space for the update to run.

The image also shows 232 (!) Gigabytes of unallocated disk-space following the "C:" partition.

Do you have a planned usage for that space, or do you want to use Disk Management to "extend" the "C:" partition?

Is it possible that your "C:" disk-drive is too full to record the successful update?

Try running the "Disk Cleanup" app, to free-up some space.

If using Microsoft Outlook, its "PST" file can contain "dead" space (disk-space that is no longer associated with any E-mail).

Use Outlook to "compact" that PST.

Your inappropriate, anger-filled, reply is not helpful.

Obviously, it is a failure within Microsoft's "Quality Assurance" department. It was they who did not do enough testing on a variety of computers, with a variety of sizes of the "WinRE" partition, before "approving" the update for inclusion in the monthly release of Security Updates.

Take a brand-new disk-drive, and use "cloning" software to copy each partition from your "antique" (and out-of-warranty) disk-drive onto the new disk-drive. The cloning software can be used to slightly shrink the "C:" partition, and then to use that freed-up space to merge with the "WinRE" partition, to expand that partition. Then, rerun the update. This worked for me.

Contact Microsoft, because they offer free technical support for all Windows-Update-related issues, such as this one.