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I understand that you could just fix the certificate issue or you could go to each pc and do the following:

Internet Options, Advanced, uncheck "Warn about certificate address mismatch".

But is there a way to set this in the GPO so that it does it for everyone?

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Doesn't that defeat the object of having security warnings? I'd make this a training issue, personally. – user3914 Sep 11 '09 at 14:14
Wouldn't it be easier to just fix the certificate? – Justin Scott Sep 11 '09 at 14:16
up vote 4 down vote accepted

This is the registry key you need to tweak:

HKEY_USERS\"USER  SID VALUE"\Software\Microsoft\Windows\CurrentVersion\Internet Settings\WarnonBadCertRecving

And Microsoft has a great article about making registry changes across your enterprise HERE

Now, I do have to say that this strikes me as a poor idea. This removes pretty much all the fraud protection built into SSL-but after weighing the options, the tools are there to make the change.

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+1 pointing out the bad-idea-ness and still answering the question. – squillman Sep 11 '09 at 15:07
+1 - The idea of disabling this security warning is a BAD idea! – Dscoduc Sep 11 '09 at 16:42
an Enterprise-wide registry hack is not the way we want to go obviously. I'm going to look into the reasons for the certificate error and I'll post a follow up. – jasoncrider Sep 13 '09 at 22:26
I followed up and found out that the problem revolves around intranet pc's hitting one IP and outside users hitting another. They decided to route the internal to a non-secure site to get around it. – jasoncrider Sep 14 '09 at 18:25

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