I have a Windows 10 story that's largely a display of bad decisions made by myself, but also tells of how **** W10 can be.
So back when the Starwars Battlefront beta was going on, I planned on playing it with a few of my friends. Unfortunately, I had issues running the game which turned out to solvable by either installing W7 SP1, or W10. So I chose W10. Can't be that bad right? I'm due for an upgrade anyway.
I upgraded, and had a couple of days of fun with the beta. Moved on back to CSGO, which I noticed ran considerably slower now. Same with TF2. So I looked for why this was happening, and it turns out that by default, W10 has a feature
that records the last 30 seconds of your gameplay, in case you want to save it or something. I didn't want this.
If you read the instructions for disabling this in that link, you'll see that you have to access the Xbox app. For this, you need an Xbox account thing. Pretty annoying, but I figured I'd only need to do this once. So I made an account with garbage values and credentials, disabled DVR, and all was well.
The next day when I sat down at my computer, I was greeted by a Windows logon prompt, which I didn't have before. It was asking for the password to this garbage account I made the previous night. I couldn't remember the random password, and my associated phone number was also garbage, so I couldn't recover it. Called Microsoft support, they weren't allowed to reset the account or anything. I was locked out of my own machine. I didn't realise that account I made wasn't just some Xbox gaming account, it was an actual Microsoft account.
So I went back to Windows 7. Don't plan on upgrading for a long time now.