I am in the process of making our WPAD script ipv6 ready. I downloaded our current (working) WPAD script and configured the following options in

Internet Options -> Connections -> LAN settings

  • Automatically detect settings unticked

  • Use automatic configuration script ticked

  • use proxy server for your LAN unticked

I tried the following Layouts for specifing the WPAD address:

  • file://C:\Windows\system32\drivers\etc\wpad.dat

  • file:///C:\Windows\system32\drivers\etc\wpad.dat

  • file:////C:\Windows\system32\drivers\etc\wpad.dat

  • file://C:/Windows/system32/drivers/etc/wpad.dat

While Chrome 33 works perfectly with each of theese lines IE doesnt work with a single one. But if it loads the script from it works perfectly fine.

Does anyone know how to get IE 11 to load a local wpad script ?

  • Have you seen this discussion and this article? I'm thinking maybe it has to do with the way that IE caches the WPAD information, and that disabling the caching may allow you to conduct your tests. – austinian Aug 6 '15 at 15:40

IE11 requires the wpad.dat file to be served out by a web server, eg. IIS.

From Auto detect settings Internet Explorer 11:

Internet Explorer 11 creates a default URL template based on the host name, wpad. For example, http://wpad.<domain>.com/wpad.dat. Because of this, you need to set up a file or redirection point in your web server WPAD record, named wpad.dat. The wpad.dat record delivers the contents of your automatic configuration file.

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