Squid, negotiate and WPAD.dat
I am currently in the process of setting up a squid server to replace our TMG server.
I have got Squid up and running, on Windows Server 2008 R2 (this is done to try and keep as much of a 'standard' platform in school as possible for future years).
I have it working with negotiate - if I put the proxy in the manual proxy details boxes. It logs my username against my web browsing as it should. However, if I enter the details in our WPAD.dat file (replacing the IP of the existing TMG server), I get prompted to log in!
Any idea why it'd be prompting me there but not when its defined manually?