There is a known problem with that update.
Pinned threads at the top of this forum.
Windows Update error 0x80070643 in Windows 10 when Updating KB5034441
Best just to wait until it is fixed.
Best just to wait until it is fixed????? I pay GOOD MONEY for this OS!! Ya want me to switch to APPLE/MAC???!!
If NOT, get off your asses.... FIX IT!!