Hi, QoS is active on both NICs by default. I have enabled effective bandwidth with the default bandwidth rules. However, if I add a new bandwidth rule with any priority and ISA receives a new request after enabling the new rule, drwatson32 handles the exception of w3proxy.exe and web proxy service fails. I investigated this problem with a newly installed ISA server and nothing has changed. ISA is a standalone machine. All outbound accesses are enabled. ISA is publishing a mail server. Effective bandwidth is set to 64Kbps so that is what the customer's WAN bandwidth. Thats all what ISA has. Could you please help me?