In June 2016, this nagging became much more intrusive. MS began squatting on your machine with the Win 10 install files. They then began installing Win 10 without warning on unsuspecting users.
Given the privacy and security concerns with Win 10, you may not want to be nagged to update, here’s how to stop the Windows 10 upgrade notifications and run Windows 7 or 8 forever.
There are a few methods which worked in the past but no longer stop the nagging and surreptitious install of Win 10. Never10 is the current tool that most easily disables the upgrade.