I have ISA setup in cache mode. I need to authenticate Outbound requests. The ISA servers are in an array which is configured to authenticate all outbound requests. Anonymous access is not allowed in the rule base. The clients are set up as web proxy clients, using the arrayname:8080/array.dll?get.routing.script But all clients then receive a 403.6 error I have setup autodiscovery - which works fine. If I point the clients at the ISA server directly this also works well. However, I need to use the script as I obviously caching web pages. Can anyone tell me how I can troubleshoot the get.routing.script???