Back in the day, you used to have a little balloon in the corner reminding you from time to time that you should activate Windows ASAP. But those times are gone. Now you get this:
No, you can’t use Alt + Tab. No, you can’t use Alt + F4. You gotta go to PC Settings, and then exit from that. But if that’s not annoying enough, you’ll also get some cool surprises like this one:
Isn’t that cute?