There can be several reasons why you may encounter Norton 360 problems. The problem can be with your internet, which might stop working after Norton antivirus installation. It is most likely due to technical glitches and conflicting software. If the Norton antivirus update fails, it may result in an internet outage. You do not need to uninstall Norton to regain access to the internet. Simply disable Norton antivirus for a short period of time and then re-enable it when the internet is restored.