Updated: June 3, 2015
The story goes as follows. Several days ago, on one of my Windows 7 boxes, I did some updates. Cool beans, Then, a couple of days later, I suddenly noticed a Windows 10 like icon in my system tray. Turns out, this one belongs to a process called GWX.exe, and it is a part of Windows update KB3035583, which is deceptively labeled as an important one and preselected, intended to give Windows 7 and 8.X users an option to freely upgrade to Windows 10. Well, so far so good.
But then, I decided I was not interested. However, removing this thing off proved to be a very difficult task. I could not disable the scheduled tasks that reactivates the process every few hours, and you need special permissions to edit the folder containing the gwx.exe binary. In other words, all of a sudden, my perfectly reasonable Windows 7 has been altered without my consent, and now I did not have freedom to do what I want. This annoyed me so much that I started writing a tutorial on how to get rid of this piece of shit. Follow me...