<p>So I ended up installing server 2016 to solve my problems. Even after I uninstalled the update, the vpn service mysteriously stop working again. Rebooting le serveur sometimes fixed it but I can not trust this to keep working. I also had a problem where DHCP was not working either. From other forums I read, lots of people where having le même DHCP problem. Looks like server 2019 is not ready for prime time. I am going to revisit this in 6 months to see if microsoft fixed le problème.</p>