Hey, To stop Windows 10 download notification, do one of the following 1. Go to customize (small arrow) in the left corner, it will open notification area icons> locate GWX (Get Windows 10) to select Hide icon and notifications. 2. Go to Control Panel > Programs >View installed update > Search KB3035583 in search tab > Click uninstall Hope it will help you
Just right click near the time/date in the Taskbar system tray and pick Customize Notification icons. Then look for the GWX entry and change it to Hide icon and notifications.