I visited my parents last weekend. My dad says his laptop automatically updated to Windows 10 a month ago and since then he was unable to use the internet (so basically the machine). He was PO'ed. He was tricked into installing it because Microsoft changed the behavior of the upgrade prompt. You can choose "Upgrade now" or "Not now, upgrade later". "Not now, upgrade later" use to behave like and mean "Ask me again later" Microsoft changed it to mean and behave like "Yes. Upgrade me, just not now... force it later". My mother was and has been able to avoid the forced upgrade by always clicking the "X" to close the prompt window and avoiding the dark pattern behavior.