Norton 360 not opening

I have a 10-user Norton 360 License.  For some time, Norton 360 has not been opening or functioning. I explored the options advised on web, and accordingly uninstalled the same from computer using Norton Removal Tool. And thereafter reinstalled the same, but it's not working.

Lastly, I started computer in safe mode, and then removed Norton 360 using Windows Control Panel and also using Norton Removal Tool (also in safe mode).  Thereafter I started the computer in normal mode to reinstall Norton 360. It did start reinstallation process but had error reported at the end.  But when I tried to open Norton 360 to run scan or to make Live Update, it is not opening.

Kindly advise what should I do.