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This serverfault question appears high in google searches which is why I am replying to it. I hope others find this useful as this problem was a real pain for me. Almost every Windows 7 computer on our domain of about 50 users was affected - going around and resetting IE was not acceptable as far as I was concerned so I eventually resolved it as follows: ...


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It is possible to redirect the wpad.dat to wpad.aspx and find the ip address with ASP: <% Dim strClientIP As String strClientIP = Request.UserHostAddress() %> function FindProxyForURL(url, host) { //proxy definition var UseProxy = "PROXY x.x.x.x:8080" if (isPlainHostName(host)) {return "DIRECT"; } if (isInNet("<%Response.Write(...


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At our organization, because of how little it's called (even with a thousand users!), we put it on our web server, and point it there specifically, using the IP address. The reason we do this is because if the server is unavailable, it won't stop them from connecting anyways (i.e. if they take their portable computer home). Putting it on a file share is ...


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Another thing to look out for is detailed in the following URL: https://technet.microsoft.com/en-au/library/cc995158.aspx DNS may have a block list enabled of which wpad is defined as a blocked record, this is a protective measure.


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https://blogs.msdn.microsoft.com/ieinternals/2013/10/11/understanding-web-proxy-configuration/ You should look at the above. The file:// format is deprecated


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IE Version 6.0.2900.xxxx looks for the filename "wpad.da" instead of "wpad.dat" BE CAREFUL! ;) Just use a sniffer or check your webserver logs. Hope this helps!


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