Creating LocalAdmin User

[ogeccut]

I installed new server 2008r2. Created AD, DNS and DHCP.

And trying to create a new AD local admin user.

 

Creating a GPO using restricted groups When i am adding a user "ClientInstall" i am getitng the following error:

"specified domain either does not exist or could not be contacted"

 

I tried rebuilding from the start and same error.

What am i missing?

 

Thank you.