The Windows 10 nag screen was using a dirty trick that involved having the close button to start the installation. This is very annoying, firstly, you click the upgrade now button and it starts the upgrade, but now the close button was starting the upgrade? That is one dirty trick indeed. Why are Microsoft so desperate for everyone to upgrade to Windows 10 anyway? Forcing these updates on everyone will not curry favor with more paranoid users. Of course, they are the company responsible for the Metro/Modern UI start screen in Windows 8. That was an unforgivable User Interface invention. Windows 8 as a whole was very strange. Just like using Android x86 on a eePC. A mobile phone interface does not work well on a PC. I cannot believe that the Windows 8 styled start screen was in Windows Server 2012. Why would a server operating system need a mobile phone UI? So many computers have had serious issues with running the upgrade and rebooting into an unusable state. That is unacceptible in 2016. That is why I will stay with Windows 7 for the time being.
This posting has a solution for Windows 7 and 8 that will prevent Windows 10 automatic updates. This will be very useful if your machine is fine the way it is and you do not wish to run Windows 10 at all. GWX Control Panel is the easy way to protect your machine from Windows 10. Having something like the below screenshot happen to you would really suck. This guy was livestreaming a counterstrike gaming session and his computer automatically restarted into a Windows 10 upgrade. That ridiculous. That is why you block the upgrade crap.