2 hours ago, cardsfanbj said:
I let it run overnight, and it's still stuck at 58%. Not going to touch it before leaving for work, hoping it will do something over the next 8 hours, even though the last 8 did nothing.
If it's been at 58% for hours / a day then it's stuck.
Restart the machine and it should roll back the updates automatically.
If not then Wnidows should have created a restore point just before installing the updates. You can manually do that if needed.