I am trying to implement the Automated Proxy Detection System for TMG, unfortunately i am not getting any ware. I have a TMG server running SP2 and it is working fine as a proxy server, however due to laptops going home i am unable to state a proxy server with IE using GP anymore and need the WPAD system to replace this. When I try enable this i am getting a very strange issue that seems undocumented, when i enable the "Auto Discovery" function within TMG using port 80 everything applies fine. After the sync I try and gotohttp://proxy/wpad.dat and i get "Internet Explorer cannot display the webpage" if I gotohttp://proxy/wspad.dat i get a 1.36kb file with data in it. At this point I checked that nothing was using port 80 by using the "netsh http show service state" and confirmed noting else was using port 80. I then checked TMG and insured there was no port mapping or web listeners, so it then though to check if it is ports I changed the "Auto Discovery" port to 8081 and tried to browse tohttp://proxy:8081/wpad.dat and was prompted to download a 8kb file. I am also able to download wpad.dat fromhttp://proxy:8080/ which is the proxy port. If someone could give me a starter of where to look that will be great, i have been working on this issue for a long time now and really want to solve it as it will vastly improve user experience for mobile laptops.
Regards,
Stuart