On a new AD, I have joined a local computer (W2008 Server R2) to the domain.
After the reboot, I could not log with the domain administrator account to the machine.
Using the local admin, the "Domain Admins" group is not shown in the 'Administrators' group.
If I do try to add the domain admins group to the local administrators group, I get the error: "Domain Admins" is already a member of the group "Administrator"
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The machines are VM template based.