On a deeper analysis of the problem, I found the following: On the server, the openvpn version is older than on the client. The error is caused by the fact that the client (in our case Vix ver 6.1) requires handshakes by the protocol (OPENSSL 3.X) TLS v.1.3. Image Vix ver 6.0 had OpenSSL version 1.1.X and TLS v. 1.1.In conclusion : This is not an Image error, but an interpretation of SSL/TLS.My procedure will be : I will try to upgrade OpenSSL to version 3.X on the server side.
Cheers, Kdal.