PAC & WPAD Troubleshooting
I host my PAC file on a web server but my browser doesn't seem to pick it up?
This is usually because the web server doesn't have the correct MIME type configured.
If you're not using WPAD and just pointing directly to a PAC file, configure the MIME type application/x-ns-proxy-autoconfig for the .pac extension.
If you're using WPAD configure the MIME type application/x-ns-proxy-autoconfig for the .dat extension.
It's always worth double checking your PAC file code for syntax errors! If you've confirmed that the MIME type is configured and that syntax looks correct, perhaps try hosting the file on a local machine to rule out the web server.
I've setup the WPAD DHCP method but Firefox won't pick up the PAC file?
The WPAD DHCP method is only supported by Internet Explorer. You will need to configure the WPAD DNS method in order to push out settings to browsers other than Internet Explorer.
I'm configuring WPAD but can't figure out how to convert my file to a wpad.dat file?!
The wpad.dat file is simply a normal PAC file but renamed and using a different extension. e.g. myproxyfile.pac is renamed to wpad.dat - that's it!
After updating my PAC/wpad.dat file, my change doesn't seem to have taken effect?
Browsers cache the PAC file, rather than retrieve it for each request. Clear the browser cache, close all browser windows and open the browser again. This is usually sufficient.