The namespace server is offline because the DFS Namespace service (Distributed File System on Windows Server 2003) is not running.
The DFS Namespace service is set to start automatically, but is not running. A service can stop for many reasons, including:
The service was stopped by an administrator.
The service could not allocate the required memory.
The service was prevented from starting because the user account could not be authenticated.
To resolve this issue, start the DFS Namespace service (Distributed File System on Windows Server 2003). To do so, in the Operations console, click the Start DFS Namespace Service task.
To confirm that the DFS Namespace service is running, in the Operations console, click the Query DFS Namespace Service Status task. This monitor resets to a Healthy state after the service starts.
If these actions do not resolve the problem, it is likely that there are other problems that will require in-depth troubleshooting.