Cross-forest GPO between 2003 and 2008 Denied Beacuse it's "Inaccessible"

Posted by j.rightly on Server Fault See other posts from Server Fault or by j.rightly
Published on 2011-06-29T15:41:51Z Indexed on 2011/06/29 16:24 UTC
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I have a two-way, non-transitive trust between two forests and domains, "W2003" and "W2008".

In W2008 I have a GPO with user settings linked to a machine OU containing machine "Server". The GPO applies to Authenticated Users.

Cross-forest loopback processing is enabled in merge mode.

When I log onto Server as User (whose account exists in the W2003 domain), the GPO does not apply.

I run RSoP and see that the GPO is "Denied" for the reason "Inaccessible." The GPO name is not listed, but the GUID is.

I have checked the file-level permissions on the DC to ensure that User has access to read the GPO's folder and all its contents.

What is going on?

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