according to my previous question regarding domain admin have full access to its own domain. However, when I open ADUC as domain administrator, I got error:
Active directory domain services:
Naming information cannot be located because: Access is denied
contact your system adminstrator to verify that your dcomain is properly configured and is currently online.
After open ADUC, when click change domain - browse - select my domain - ok, then got domain not found because access denied.