"This issue can occur if the computer does not have enough disk space to apply the update"
Please don't insult us.
We're getting this crappy cumulative update bug on VARIOUS devices while this is our space status:
The least you could do is admit that this is 100% Microsoft's own thing. Once upon a time (until 5 or so years ago) such update interruptions were unheard of in over 15 year continuous usage of Microsoft Windows.
Microsoft got bigger, and in the process, crappier, started lowering its software programming quality — that's all what happened here.
NONE of your suggestions helped. Now I have turned off Windows update as the damage it causes to hardware by constantly restart-reverting every couple of days outweighs having an older software.
I plan to see if the hacking community provides solution and then spread their solution far and wide.