Don't get me started on Windows Updates... Well, too late. This is another good reason to change your update settings so that they don't install without your permission.
I have my system set to download updates but never install. I did this one day after Windows 8.1 had nagged me several times about updates and I dismissed the install several times. After a day or so, it decided to force a shutdown when I had stepped away from my laptop, and install the updates. I had unsaved work in a spreadsheet that I lost. That was enough, and I set it to never install updates.
Problem now is that I never know if I have pending updates to install because the people at Microsoft who set up the system are morons. The only place where it tells me I have pending updates to install is when I go to the shutdown screen. Well, this is a laptop, and I don't ever shut it down unless I do so because it needs a reboot. I have the power button set to go to sleep mode. So I don't see those notifications on the shutdown screen, maybe sometimes for a couple weeks.
They could put a update icon in the systray, or pop up a box when I hit the power switch that asks if it's OK to do the updates now. If I don't click yes in like 10 seconds just go to sleep mode so it doesn't install updates while stuffed in my laptop bag.
Oh, and the don't install updates until I say so also applies to the virus/malware definitions for Windows Defender. So it no longer updates automatically. Annoying. It's update settings should be separate. Ridiculous...