PAC file not working with Internet Explorer
Posted on 2011-10-23
Hi, I am trying to get a .PAC file working in our environment, but I cannot get it work at all in Internet Explorer. It is suppose to be pointing onLAN to Telstra's MessageLabs proxy and offLAN direct. I have tried Internet Explorer 6,7,8 and 9, and all fail to work. However, I have tried the PAC file in firefox and it works correctly. The Pac file is sitting in the c: drive at the moment and I reference it by "file:///c:/proxy.pac". I have also tried the basic "c:\proxy.pac" to no success. I have checked that there is nothing being pushed out by Group Policy that should affect it, but I am sure which settings could interfere with a PAC file this way. But to be sure I have tried on both machines on and off our network. Below is the copy of the script I have used;
function FindProxyForURL(url, host)
if (isInNet(myIpAddress(), "10.0.0.0", "255.255.255.0"))
return "PROXY proxy1.ap.webscanningservice.com:3128";
The PAC file itself works well in firefox, but does not seem to be referenced at all in Internet Explorer. Any ideas or suggestions would be greatly appreciated as i am running out of ideas as to why it is not working.