Windows 7 and 8.1 users who have started their system today may have noticed a new update notification in the operating system's system tray area that allows them to reserve an upgrade to Microsoft's upcoming operating system Windows 10. For the full article go here http://www.ghacks.net/2015/06/01/how-to-block-the-windows-10-update-notification-in-earlier-versions-of-windows/ for the kb#s to uninstall/hide scroll down the page.