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ISA 2006, WPAD, IE Auto Detect - users prompted for credentials in IE

Posted on 2009-05-07
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Last Modified: 2012-05-06
Hi all,

I've just setup WPAD in DHCP which runs on our ISA box.  I have enabled ISA to broadcast the auto discovery info for the internal netowrk and it's all ticking along happily.

Now, with auto dtetct settings enabled in IE on any computer any user gets requested for thier AD username and password.  I would expect this on non-domain computers, but it's happening to domain members as well.  It pops up for any IE window or any other app that try to access the net.

I think I have seen this issue before and there was a registry fix for it, but that was on ISA 2004 and, despite searching high and low, I can't find that fix anywhere on the net!

Appreciate any assistance!
     
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Question by:Schikitar
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Author Comment

by:Schikitar
ID: 24409055
I found the registry fix I was referring to, which is basically this;

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Proxy\Parameters]
"SkipAuthenticationForRoutingInformation"=dword:00000001

Unfortunately this had no affect and I'm still getting asked to confirm my credentials (it defaults to the local machine though, rather than the domain, ie. ISA\<username> rather than DOMAIN\<username> - not sure if that is relevant).
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Accepted Solution

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Schikitar earned 0 total points
ID: 24417984
Okay, we found the solution in this thread - http://forums.isaserver.org/m_270016300/mpage_1/key_/tm.htm#270016317

Seems, because of the Burstek filtering software we use, we needed to create a web server publishing rule and listener (we used the non-standard port 8088 for wpad through DHCP).

That's two questions in a row I've had to solve without any assistance - it's a bit dissapointing!
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Expert Comment

by:pyv4x
ID: 34493322
It was a quick fix for me. Go to Internet Option > Connection > LAN Settings. Uncheck all the boxes.
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