[ifdefdebug]

> to avoid the ninja Windows 10 upgrade

What ninja upgrade? You always had to opt-in. Yes, they were really pushing the offer annoyingly hard, but I had no problems whatsoever to keep one of my machines on Windows 7.

Anyway, you can stop doing so now, the time for a free upgrade is over.

[Strom]

This is incorrect. There was an opt-out phase where the Windows 10 install started automatically in the middle of work. I've experienced this myself, there's a moment where Windows 7 just shuts down and starts installing Windows 10 and I had to wait 30 minutes until I could press "I disagree" to the EULA and then it would start rolling back the Windows 10 it just installed.