How do I create home groups that work with norton360 and windows8 and windows 7 in one home?

I have  2 win 7 PCs and 1 win8 on different floors, different access points within one LAN.   I cannot get the firewall to let homegroup in windows work with them.   I am leary of uninstalling norton 360, isn't there a simpler solution?

I have  2 win 7 PCs and 1 win8 on different floors, different access points within one LAN.   I cannot get the firewall to let homegroup in windows work with them.   I am leary of uninstalling norton 360, isn't there a simpler solution?