I have been using Norton 360 for the past year with Windows 8.1 machine with no major problems. After switching to 2015 I am having the following issues: 1) Windows fails to shut down. 2) Norton icon sometimes won't show up in task bar; When this occurs, Norton won't start using the shortcut either. 3) On boot sometimes get the message "Failed to connect to a Windows Service" (Group Policy Client Service).
I have followed the advice to use Norton removal tool and reinstall Norton 2015. It seems to work for awhile and then these issues reoccur. I have been forced for now to remove Norton and enable Windows Defender; It is working without issue, but I would like to get Norton to work for it's additional features and get value for the money I have paid for this product. I got the Norton 2015 with backup version.