Firewall and Windows Updates

Whenever my PC gets an update to Windows 8 the Norton Firewall blocks access to the web in general and I have to go in and adjust it.  Can't even remember exactly what I do but even after I get access to the web I find that it also blocks my access to the iTunes store and I have to go in and "allow" that every time.  Can anyone tell me how to avoid all this?  Why does Norton have to put me through all this every time I get a Windows 8 update???  I can't believe this issue affects everyone.  Is there an easy fix to this?  Any advice is greatly appreciated.