Event ID 21 — NPS Availability and Configuration

Applies To: Windows Server 2008

Health Registration Authority (HRA) requires that Network Policy Server (NPS) is installed and running on the same computer. NPS on the local computer must be configured with Network Access Protection (NAP) policies for the evaluation of client health status, or it must be configured as a RADIUS proxy to forward client connection requests to a remote server running NPS for evaluation.

If you configure NPS on the local computer as a RADIUS proxy, then you must configure NAP policies on a remote server running NPS and enable HRA as a RADIUS client. The RADIUS proxy must have network connectivity to the remote server running NPS.

Event Details

Product: Windows Operating System
ID: 21
Source: HRA
Version: 6.0
Message: The Health Registration Authority has approved the request with the Correlation ID %1 at IP address %2 (Principal: %3). The Network Policy Server has indicated that the client should be placed in probation.


This is a normal condition. No further action is required.

NPS Availability and Configuration

NAP Infrastructure