I've tried all suggested fixes from support.norton. I have Window 8.1. Norton product window turns red and at risk message displayed with fix now icon. clicking fix does not run live update and does not do system scan; quick or full. I did restart computer to try to run scan, this used to work prior to Norton's upgrade of 360 Premier but does not now. Also as suggested I disabled fast start up but this also did not help. I also tried to rub=n quick scan from the Norton icon in the notification area (system tray), but nothing happens here either. I have not been able to scan my computer since 06/28/2015. I bought a three (3) year subscription in June 2015 online when my last subscription was ending. This product does say that it is updating virus definitions and back-ups. Any Help is appreciated