Hi folks, my problem is the following. I am using Windows XP Professional and I am connected to a Windows Small Business Server 2000 Network. I connect to the internet through a ISA-Server ("Microsoft Internet Security and Acceleration Server"; Version 2000) which, serves also as firewall / proxy / dhcp. Therefore, I have installed the Microsoft Firewall Client (FWC). IE and firefox work properly if I type in the proxy-settings. If i do the same in MSN Messenger or Skype, the services don't work. According to the networkadmin, all the required ports are open. (Which I believe, because the problem only exists at my machine.) (fyi: AntiVirus-definition-downloads work properly, if i type in the proxy details.) After installing FWC, it shows an icon in the notification area. There are three 4 states: red cross -> no connection to the ISA Server red arrow down -> disabled nothing (but the sign) -> configured green arrow up -> connected to the isa-server here's the intresting thing: IF the green arrow is up, everything, even MSN Messenger and Skype etc. work properly. But my problem is, that i only get the sign, without anything ("configured"), so i can use only my web browser. Does anybody know here, what I should do to get this "green arrow up" again? (I tired: - re-setting up my computer (it was anyways time) - repairing the network-connection - rebooting the computer - restarting the FWC ) if anybody knows if I can do anything, please help. Thanks alot. t-shooter. (for once not shooting problems, but being shot at.) __________________________ Keep it simple. As simple as possible, but no simpler.