HI All,

I have two domain controller in my environment , server 1 holds Schema and Domain naming and server 2 holds PDC, RID and Infrastructure master role, Suddenly i got following error in server2 when i am tried to open active directory users and computer

NOte:

Both servers are windows server 2008R2

Please find the below error and help me to solve the issue ASAP,

Naming information cannot be located for the following reason: The server is not operational.

If you are trying to connect to a domain controller running windows 2000, verify that windows 2000 service pack 3 or later is installed on the DC, or use the windows 2000 administrator tools.

HI All,

Naming information cannot be located for the following reason: The server is not operational.

Refer to this blog:

• Active Directory Naming Information Could Not Be Located Because
• Why do I receive an error when I access some Active Directory (AD)-related Microsoft Management Console (MMC) snap-ins?

I would recommend that you start with this especially the IP setting recommendations: http://www.ahmedmalek.com/web/fr/articles.asp?artid=23

Also, you can use dcdiag and repadmin commands to make sure that your DCs and AD replication are working well.