Norton crashes when attempting to change firewall settings

Hi,

 

I am having an issue with Norton 360 freezing when I attempt to access 'Program Rules' from the Firewall settings menu.

 

The problem came to light as Norton was preventing a game (Hearthstone) that requires a connection from launching. I know this as the game only launches when the Smart Firewall is temporarily disabled.

 

To resolve the issue I  thought to adjust the Program Rules settings. However as soon as I click on the tab, the cursor perpetually displays the loading icon, without opening the Program Rules section. When I attempt to close Norton 360, the program becomes non responsive and greyed-out, refuses to fully shut down, either by using the Windows prompt or Task Manager.

 

System details:

Norton 360 Version: 21.4.0.13

  • I have run Live Update multiple times
  • No other anti-malware or virus software installed 

Windows version 8.1 (Up to date)

 

Thanks for any help,

 

Will