Event ID 4400 — NPS and Domain Controller Communication
Applies To: Windows Server 2008 R2
Network Policy Server (NPS) contacts domain controllers to perform authentication and authorization for connection requests received from configured RADIUS clients. If NPS cannot contact domain controllers, it cannot perform authentication and authorization, and network access authentication will fail.
|Product:||Windows Operating System|
|Message:||A LDAP connection with domain controller %1 for domain %2 is established.|
This is a normal condition. No further action is required.