i too have all of a sudden and out of the blue,been blocked by a firewall.i keep my lw on at all times and have not tinkered with anything.i went through the instructions in sticky to no avail.there is a conflicting statement when it comes to firewall config;are we to tick ''use upnp'' or ''manual''? both have been mentioned.while deleting an unwanted file,for a moment the firewall disappeared but was still unable to connect.a moment later,the firewall rerurned.id like to in advance thank those who are here to help us less informed.tyvm