Mostly have Always ON VPN setup and configured, but we are getting an authentication error during trial connections.
Error: The NPS was unable to connect to a DC where the account is located, Because of this, authentication and Authorization for Radius request has failed.
Setup: VPN Server (windows 2019) (Physical server) connects and sends request to NPS
NPS Server (VM) (windows 2019) is supposed to authenticate.
DC (Physical Server) (Windows 2012)
(Added) We also have a Cert. Auth. (Windows 2019) (VM) though that seems to be working fine issuing certificates.
NPS can ping DC, it shows in the domain.
My thought is because it is 2012 server edition. Any thoughts or ideas?