I tried to use L2TP protocol, but it doesn't work either, even in 1909 it doesn't connect from my Windows 10 2004 (client) to my Windows 10 1909 (server). It stays locked at "connecting with...". As soon as I change to PPTP, it works perfectly, but it doesn't when the server is upgraded to 2004 or 20H2.
Please, any idea or plan of help? Should I stay forever in 1909 in the VPN integrated server?
regards