N360 disappears after LiveUpdate, replaced by non-working N Security.
After running LiveUpdate recently N360 disappeared from its folder in the Programs section of the Start Menu (Win 10, 64 bit) and was replaced by Norton Security and oddly, a dll file. Double clicking N Security does nothing. N360 can be opened via the icon in the notification area of the Taskbar but this icon disappears after running LiveUpdate. A Norton 360 executable can no longer be found on the C drive - what is going on. In other words the only way to access N360 is to restart to restore the Taskbar icon.
Running LiveUpdate yields a patch to be applied but running LiveUpdate a few minutes later results in the same thing - a process that I have now repeated many times, restarting each time to regenerate the N360 icon.
How do I get N360 back, how do I get it to show up in the Start menu, and how do I get LiveUpdate to work properly?