VitalPBX V4 OpenVPN TLS handshake failed

Hi all, I am facing problem connecting openvpn to PC/phone/PBX as client. It shows TLS handshake failed ERROR.
Please help if anybody resolved this issue. Thanks in advance

Thu Jun 13 13:53:53 2024 TLS: Initial packet from 159.65.138.242:8288, sid=f5f81ec2 c4d6a3c2
Thu Jun 13 13:54:53 2024 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
Thu Jun 13 13:54:53 2024 TLS Error: TLS handshake failed
Thu Jun 13 13:54:53 2024 TCP/UDP: Closing socket
Thu Jun 13 13:54:53 2024 SIGTERM[soft,tls-error] received, process exiting
Thu Jun 13 13:54:53 2024 MANAGEMENT: >STATE:1718258093,EXITING,tls-error,

What version of the OpenVPN Client do you have on your Desktop?

It would be useful if you shared the OpenVPN Server settings!

Hi, I am using OpenVPN Connect version 3.4.4

Update! Using Openvpn Connect V-3.4.4 can able to connect using Generic-client certificate, but cannot connect to other PBX(Zycoo) as a client certificate (Grandstream) for remote access, it showing TLS error.
FYI, the same PBX can able to connect to Vital V3 openvpn. So at Vital V4 certificate

VitalPBX 4 uses the latest OpenVPN version. So, old VPN clients won’t be able to connect!

Hi Miguel, Yes, updated to new vpn coneect then able to connect. But when I try to connect to other PBX as a client, it still shows TLS Certificate error (TLS handshake failed).

As I mentioned before: