Cannot authenticate by NX protocol when 2FA authentication uses a RADIUS server
The NoMachine client does not display the request for Two Factor Authentication when the user connects by NX protocol and the 2FA server (e.g. Windows NPS or Azure Cloud) is configured to work as a RADIUS server
As a temporary workaround, if the NoMachine server supports it, choose to connect by SSH protocol in the NoMachine User Interface.
SOLVED, Released in version 6.5.6
