Cannot get Windows Server 2019 SSTP VPN authentication to work. I have set up Windows server 2019 Std on a small ProLiant Microserver straight out of the box. I have installed ADDS, IIS and RRAS , and got a working SSL certificate bound to default website (from LetsEncrypt). I have setup 20 SSTP ports with their own static IP address pool . I am using Windows Authentication (have not installed NPS) and have selected MSChap v2 as a valid authentication protocol. When I try to connect to this server via this VPN it appears to connect and then immediately fails authentication. It clearly refuses to accept my username and password for the domain (despite that username being an enterprise and domain administrator ). I have a very similar setup working with a couple of other customers elsewhere but this one just will not work. I have selected Allow Access on the user profile. Is there something else I've missed? Something that authorises users to be able to connect to the domain via VPN??