I login to a Windows 2008 Server as Administrator and when I try to add a user to a group, it makes me authenticate to the domain before I can do so.
As soon as I click the Add button, I get a dialog containing the following message:
Enter Network Password
Enter the name and password of an account with permissions for <name of domain is here>
So I enter my network credentials and it allows me to add the user.
If I login to the server with my domain account, it doesn't prompt me because I am already authenticated to the domain. If I were modifying a domain group, that would make sense to me. But this is a local group defined on the server, not on the domain.
Is there a setting that controls this?