It's not just MS pushing new stuff on people without much warning. A similar thing happened to my mom with the iOS 6 => 7 update that overhauled the UI. People

It's not just MS pushing new stuff on people without much warning. A similar thing happened to my mom with the iOS 6 => 7 update that overhauled the UI. People (understandably) freak when you move their cheese. Apple seems to have gotten more of a pass for it than Microsoft is here though. If you read the actual dialog box, it reads fine. Really. It's not a trick. The big change is Windows 10 being classified as a "recommended" update. Turn off recommended updates (only take "critical" updates) if you don't want Microsoft changing functionality on your computer. It has been like that for a long time. This is a very extreme example of it though and MS knows that--that's why the box exists, I think--they don't "warn" you about other upcoming recommended updates. Yes, they could do more on that box to guide you towards cancelling the upgrade, but if they mean what they say that the update is "recommended," your dialogs should be guiding people towards getting it rather than away from it. Again, the bigger thing to question here is the choice to make it "recommended," not the dialog box.