Just learned a great Microsoft Windows lesson.
There is a database program I like that I use in a Windows VM. I was in the middle of executing some commands when: BAM, windows update and restart.
What brilliant design Microsoft, of course the update should just suddenly take control mid-keystroke.
Those commands I was in the middle of could have been something critical. For instance when switching over from one system to another, the last step is often to quickly run a couple of commands to execute the changeover so that there is just a second or two of downtime.
“Ok, tell the request router to stop sending millions of users to the old system.”
“Now, tell it to point at the new… <WINDOWS UPDATE>”
So, never, ever do anything important in Windows. And change your settings to not automatically apply updates.