It didn't work for me. Running XP Pro & LW Pro 4.9.37. Funny thing, I installed the free version on a laptop and it connects. Both say there is a firewall but all I have is a router, Netgear WGT624 v2. The desktop machine where LW Pro runs does NOT have any software firewall. Is there a later version of LW Pro? Is there another fix for no connectivity?