IE9 Proxy "Automatically detect" isn't working with wpad server

Hi,

On a number of our devices,  wpad is not working. It works on most of them, so we know the process works. We had the DNS entry wpad.* in place and confirmed, and the file is on the server and reachable.

The "Connections" tab in IE9 is generally locked out by group policy, but "automatically detect" is enabled. However, the impacted devices are able to connect to any site that they wish.

If we remove the GPO restricting the Connections tab, uncheck "automatically detect" and re-check it, it begins to work again.

We did notice that the GPO for our proxy settings is set using administrative templates rather than the new "Preferences" option, which may or may not be related. The new "preferences" options only goes up to IE8 (it's running Server 2008)

Can someone tell us why we have some users that are able to bypass the wpad.dat filter and how to fix it?

Thank you!
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FirstcomAsked:
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Guillermo FeijóoSystems administratorCommented:
I would start with a group policy resultant wizard for a failing device on a domain controller. Try to find if there is any problem appling the proxy settings gpo.

Are all this proxy bypassing devices running the same operating system?
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FirstcomAuthor Commented:
Yes, they are all running Windows 7.
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Guillermo FeijóoSystems administratorCommented:
It only affects windows 7 OS's or there are windows 7 devices where the gpo is working fine?
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FirstcomAuthor Commented:
Our company uses Windows 7 throughout. WPAD is working for some but not others.
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Guillermo FeijóoSystems administratorCommented:
Is there any gpo to hide the run button from the start menu on the impacted devices?
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FirstcomAuthor Commented:
No.

FYI, I have admin access to these devices if need be.
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Guillermo FeijóoSystems administratorCommented:
Are the affected devices laptops that could have more than one network interface (ethernet + wifi)?
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FirstcomAuthor Commented:
We implemented a new GPO to explicitly declare the proxy. It is working great.
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FirstcomAuthor Commented:
Resolved on our own.
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