Hi,

I have a problem with my Archer VR1210V, I have setup OpenVPN with Dynamic DNS on NO-IP and this service is logged correctly but when I try to connect with OpenVPN GUI V11.56.0.0 (OpenVPN v2.6.15) I receive always same error. I have reported log below.

Thanks

2025-11-07 11:04:15 WARNING: Compression for receiving enabled. Compression has been used in the past to break encryption. Sent packets are not compressed unless "allow-compression yes" is also set.
2025-11-07 11:04:15 Note: --data-ciphers-fallback with cipher 'AES-128-CBC' disables data channel offload.
2025-11-07 11:04:15 OpenVPN 2.6.15 [git:v2.6.15/90bdd59a95170169] Windows [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [DCO] built on Sep 22 2025
2025-11-07 11:04:15 Windows version 10.0 (Windows 10 or greater), amd64 executable
2025-11-07 11:04:15 library versions: OpenSSL 3.5.3 16 Sep 2025, LZO 2.10
2025-11-07 11:04:15 DCO version: 1.3.3
2025-11-07 11:04:15 MANAGEMENT: TCP Socket listening on [AF_INET]
2025-11-07 11:04:15 Need hold release from management interface, waiting...
2025-11-07 11:04:16 MANAGEMENT: Client connected from [AF_INET]
2025-11-07 11:04:16 MANAGEMENT: CMD 'state on'
2025-11-07 11:04:16 MANAGEMENT: CMD 'log on all'
2025-11-07 11:04:16 MANAGEMENT: CMD 'echo on all'
2025-11-07 11:04:16 MANAGEMENT: CMD 'byte count 5'
2025-11-07 11:04:16 MANAGEMENT: CMD 'state'
2025-11-07 11:04:16 MANAGEMENT: CMD 'hold off'
2025-11-07 11:04:16 MANAGEMENT: CMD 'hold release'
2025-11-07 11:04:16 WARNING: No server certificate verification method has been enabled.
2025-11-07 11:04:16 MANAGEMENT: >STATE:1762509856,RESOLVE,,,,,,
2025-11-07 11:04:16 TCP/UDP: Preserving recently used remote address: [AF_INET] xxx.xxx.xxx.xxx:1194
2025-11-07 11:04:16 Socket Buffers: R=[65536->65536] S=[65536->65536]
2025-11-07 11:04:16 UDPv4 link local: (not bound)
2025-11-07 11:04:16 UDPv4 link remote: [AF_INET]xxx.xxx.xxx.xxx:1194
2025-11-07 11:04:16 MANAGEMENT: >STATE:1762509856,WAIT,,,,,,
2025-11-07 11:05:16 TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity)
2025-11-07 11:05:16 TLS Error: TLS handshake failed
2025-11-07 11:05:16 SIGUSR1[soft, tls- error] received, process restarting
2025-11-07 11:05:16 MANAGEMENT: >STATE:1762509916,RECONNECTING,t l s-error,,,,,
2025-11-07 11:05:16 Restart pause, 1 second(s)
2025-11-07 11:05:17 WARNING: No server certificate verification method has been enabled.
2025-11-07 11:05:17 MANAGEMENT: >STATE:1762509917,RESOLVE,,,,,,
2025-11-07 11:05:17 TCP/UDP: Preserving recently used remote address: [AF_INET]xxx.xxx.xxx.xxx:1194
2025-11-07 11:05:17 Socket Buffers: R=[65536->65536] S=[65536->65536]
2025-11-07 11:05:17 UDPv4 link local: (not bound)
2025-11-07 11:05:17 UDPv4 link remote: [AF_INET]xxx.xxx.xxx.xxx:1194
2025-11-07 11:05:17 MANAGEMENT: >STATE:1762509917,WAIT,,,,,,
2025-11-07 11:05:52 S I G TERM[hard,] received, process exiting
2025-11-07 11:05:52 MANAGEMENT: >STATE:1762509952,EXITING,S I G TERM,,,,,

My actually VPN configuration file:

client
dev tun
proto udp
float
nobind
data-ciphers-fallback AES-128-CBC
comp-lzo adaptive
resolv-retry infinite
persist-key
persist-tun
verb 3
remote xxx  xx  xx 1194

<ca>
</ca>
<cert>
</cert>
<key>
</key>

I have add "data-ciphers-fallback AES-128-CBC" row only to try a different way to solve my problem but without success...