From what I have seen and read here and in other discussions there is a problem with update KB4579311. This update is locking up computers either in the initial installing phase or the restart install phase and the only solution is to do a hard shutdown of your computer like I had to do with my wife's Envy. After the hard shut down of my wife's HP Envy laptop I turned the computer back on and it finished installing the other update. When I logged back in I went to Update in settings and the KB4579311 was reinstalling and had no problem this time. This problem needs to be escalated to the engineers to find out why this is going on with this faulty update and MS needs to put a stop to sending out faulty updates to users. It has gotten to the point where I dread every patch Tuesday that comes around and I am now sitting here dreading the 20H2 update and what problems it will cause to mine and my wife's computer after I install it. MS needs to get it's act together and STOP causing problems with our computers every month with updates.
Don