blocking programs from using port 80 and asking permision for lan connections

Ok i went into the advanced firewall section then network security policy and found paltalk.exe then i used ether tcp or udp and i set any ip and to block port 80 on desitination and source i tried it both ways and it doesnt seem to work i’v had it work in the past so, do i have to like restart my pc for these new rules to take affect ??? and also how could I set it up so on my network I have to allow incoming lan connections incase someone on the network wants to see my shared folders please help thanks