We have a long weekend coming up, the first of the year and all systems will be offline for the long weekend. Since we're moving on to Windows Server 2019, I decided this is a good time to upgrade the lone Windows Server 2016 we have on site.
At 5:00 PM sharp I noticed all the users had already left since there were no OT. At 5:01 PM I started a backup process which finished in about 10 minutes. Unfortunately, before I started the in-place upgrade, I looked at Windows Update and it has a cumulative update. Well, couldn't hurt to be on the latest cumulative patch level before doing the upgrade.
Four hours later...