I have to report no progress with these windows updates, on my Windows 11 desktop.
I tried to update to KB5046740, but again the update failed at 38% and rolled back, despite having previously done the Windows Update Repair Install, twice!
I have to assume that these failures are all related to the same thing, inside Windows.
I should add that I have 2 laptops which update fine!
Come on Microsoft, please sort this out. I am not the only one.