Event ID: A RADIUS message was received from the invalid RADIUS client IP address [client IP address]

I've setup a new RADIUS server(2008) because my RADIUS server(2003) stopped working.  I can't get either to work and the error message I get is "A RADIUS message was received from the invalid RADIUS client IP address" Event ID: 13.
I have tried testing the RADIUS using a utility called NTRadPing right from the server itself and I still get the same error.

Any thoughts or ideas?
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Just add the client to clients list of the NPS. You need the IP of the client and shared secret to set up a RADIUS client.
bermudahsAuthor Commented:
I ended up having to change the server that was running RADIUS

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bermudahsAuthor Commented:
Resolved it myself.
Cool GuyCommented:
still am facing the same issue even i have change the server
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