We have updated all of our Domain Controllers to Windows Server 2008 R2 and have updated our Domain PolicyDefinition folder \\DC0\sysvol\DomainName.com\Policies\PolicyDefinitions, copying the files from C:\Windows\PolicyDefinitions from a WS2K8R2 DC server.
Now when we try to apply GPO to our Windows 2003 R2 Servers and Windows XP workstations, the policies do not apply.
We have installed the latest CSE we could find, but the GPOs are still not being applied when they were before the update
of the ADMX & ADML files.
As a test we put the old ADMX & ADML files back in place and reapplied the GPOs to our WS2K3R2 and WXP systems and the GPOs took.
We are not seeing any events in the System, Security or Application logs on the DC's or the targeted servers and workstations.