About 2 hours later and this is still going on. According to the display that I cannot trust, it is 77% of the way through a feature update to Windows 10, version 1709. It’s been working on this update for well over an hour. I could have installed an all new version of Windows in that time, if I had the disks to do it with. Hell, I could have installed it twice.
This is insane, but I guess we get the OS we deserve. Kind of like politics.