Microsoft’s official response is: Throughout the week, Microsoft forced Windows 7/8.1 users to opt for Windows 10 by automatically downloading a 6GB update package and barraging them with incessant popups that their PCs were ready for Windows 10 update. Earlier, Windows 7/8.1 users could opt-out of such process but now there is no longer an option to opt-out of upgrading altogether. The fact that Microsoft wants you to upgrade to Windows 10 come whatever may is not lost when not even GWX Control Panel, a third-party tool that lets you manage or sidestep such updates, is not able to do so. Believing Microsoft’s statement that it left the box checked causing the automatic upgrades, is pretty hard. It seems some top honcho in Microsoft with the permission of Satya Nadella was deliberately forcing Windows 7/8.1 users to upgrade to Windows 10.