Hi, I have just installed Microsoft Firewall client on a Win 2k host. This host is expected to dialog with a ISA server Firewall on the same lan. When booting the host, isass.exe detects a system error. It prevents me from logging and the host loops on re-booting. I can only boot when I disconnect the LAN cable on my host. Have I missed something in the installation/configuration? By the way, does Firewall client has been thought for accessing remote Isa server Firewall or is it just thought for a local Firewall. Is there a way to encrypt data between the Firewall client and the Isa Firewall ? Thank you very much for your help Thierry