I am running macOS Big Sur, version 11.5.2 and for some reason, my Norton 360 is not launching. However, this is not a new case, the same problem has also been reported in the past.

In detail, after upgrading to macOS Big Sur 11.5.2 and even the latest macOS 11.6, some users are unable to open the Norton app. As such, some macOS Big Sur users running Norton 360 are facing trouble while opening or re-installing the Norton app. However, there’s an issue being reported by the users who are using Norton 360 software on their Macs. It’s an all-in-one security solution that offers a bunch of services such as protection against malware, secure VPN, password manager, PC Cloud Backup, and more. It covers both the Windows and macOS running devices. Contact your ISP to get a public IPv4 address.Norton 360 is a popular antivirus software that keeps an eye on viruses and spammers that could ruin your crucial data. If you have a double NAT with your ISP, it might prevent you from connecting.If your ISP (Internet Service Provider) uses DS-Lite, you'll need to switch to Dual Stack or IPV4.Make sure you don't have any DMZ host configured in your router settings. If you are trying to connect to Shadow or another cloud service: You'll need to get your own dedicated router. If you are using a public Wi-Fi from an apartment building or office, those often prevent communication between devices.Make sure you have 'Full cone NAT' or 'Open NAT' enabled in your router settings if such an option exists.Make sure your PC isn't running VPN software.If using McAfee, Norton, or any other anti-virus, try disabling them or adding an exception for Virtual Desktop Streamer.If using Avast or AVG, make sure the Firewall network profile is set to Private instead of Public.Make sure the Windows Firewall isn't blocking all connections ( see here) and restart your computer.Make sure your computer is connected to the same router and is on the same network as your headset (the headset might be on a Guest network for example).If you see a ' Not on same network' warning and are not connecting through the internet remotely:

Reinstall norton on mac