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FC01Flag for United Kingdom of Great Britain and Northern Ireland

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wpad not working for IE 11 but is for Chrome and Firefox

Hello

I have come across a strange problem.  For years we have been using wpad via DNS to publish our proxy settings.  So we have an A record setup for wpad.domain.local pointing at an IP address.  On the machine with the the specified IP address we have IIS 7.5 running and in the root of the default website we have our wpad.dat file.  We have also configured the .dat mime type correctly.  As I have said this has been in place for a number of years without any problems.

Last week I removed our last Windows 2003 domain controller and replaced it with a 2012r2 server.  Not sure if this caused the problem but I thought I would mention it anyway.  Our firewall does not have an implicit block rule outbound so users can bypass the proxy by un-ticking the Automatically detect settings in IE to bypass the proxy if they need to.  (Which some of them do) We have a  Group Policy in place to re-enable the setting.

I have just noticed that users using Chrome or Firefox are correctly going through the proxy server.  However IE 11 users are not, they are going straight through the default gateway.  Chrome uses IE's settings correctly but it appears IE is totally ignoring the wpad setting.

Has anyone come across this before?

regards.
Avatar of Peter Hutchison
Peter Hutchison
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You need to allow wpad on the Windows 2008 R2 server as it is blocked by default.

https://technet.microsoft.com/en-us/library/cc995158.aspx
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ASKER

Hi Peter

Many thanks for your reply.

Sorry, I forgot to mention and I have allowed wpad on all our DNS servers.

thanks.
Have you tried to reset IE to its default settings?
Your proxy wpad settings. How it is configured, in a Javascript file or something else?
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