Two days ago suddenly users could not authenticate through the VPN or Wifi. The password prompt just keeps coming up over and over.
So I go into the Sonicwall device and check the settings, all the ip's are correct, the settings all look good. I go to test the RADIUS connection and get Authentication failed, or MSCHAP ERROR: E=691 R=0 V=3.
I checked all the settings on the Server 2012 R2 NAP server, seems good, the Sonic device is configure and enabled. Nothing seems to prevent it from logging from the NAP server settings.
To trouble shoot I added my laptop to the NAP RADIUS Clients, same issue, not able to authenticate using a couple RADIUS test tools.
What setting can I check to find out why the NAP server is suddenly not authenticating user and clients who are allowed, enabled and correctly configured in NAP.
Any thoughts on were to look or how to further troubleshoot this not being able to authenticate to the RADIUS server issue? Right now the VPN and Corporate Wifi are down because no one is able to authenticate.
Thank you
Curt Winter
Systems Engineer