Both my Cisco Virtual Wireless Controller and Windows Server 2012 serving as the radius server were rebooted after another admin updated the VMWare tools on them, I started getting calls users (laptops and mobile phones) could not connect to the wireless.
Checking logs on my vWLC console I saw a lot of: AAA Authentication Failure for Client MAC: 54:7c:69:49:ca:1e UserName:<USERNAME> User Type: WLAN USER Reason: Authentication failed
Checking NPS logs on the RADIUS server I started seeing information entries like this: 'The client could not be authenticated because the Extensible Authentication Protocol (EAP) Type cannot be processed by the server.' and 'Reason The client could not be authenticated because the Extensible Authentication Protocol (EAP) Type cannot be processed by the server.'
Application logs showed similar 'information' entries: Negotiation failed. No available EAP methods
I'll paste the full log entries below as well as screen shots of my Radius Client settings as well as Network Policies as well as Remote Connection Policies. After extensive Googling, most fixes point to a cert error, my cert doesn't expire until 2019 so I don't think is the problem but I'm not an expert at this.