Utilizing Norton Antivirus in your PC framework is a smart thought. Just you thought to check to status of your framework and you have clicked your mouse on Norton Antivirus however the issue is your Norton not opening or Norton Antivirus isn't wo. If you are running Windows 10 Version (1507 or 1511) you should disable Windows Defender of you have another security product installed. Once Windows 10 Version 1608 is released, a new feature has been added, to allow Windows Defender and another security product like Norton to exist on the same system. – Ramhound Jul 13 '16 at 11:39.