Here is syslog I am still unable to connect Works perfectly on 16.04 gw@gw:~$ grep VPN /var/log/syslog Apr 30 08:26:23 gw systemd[1]: Stopped OpenVPN service. Apr 30 11:32:11 gw systemd[1]: Starting OpenVPN service... Apr 30 11:32:11 gw systemd[1]: Started OpenVPN service. Apr 30 12:32:04 gw NetworkManager[1081]: [1525055524.3127] vpn-connection[0x55b06808e200,eb16b7fa-3167-426b-aa1a-0fa1e344b409,"Australia,Sydney2-udp",0]: Started the VPN service, PID 3201 Apr 30 12:32:04 gw NetworkManager[1081]: [1525055524.4304] vpn-connection[0x55b06808e200,eb16b7fa-3167-426b-aa1a-0fa1e344b409,"Australia,Sydney2-udp",0]: VPN plugin: state changed: starting (3) Apr 30 12:32:04 gw NetworkManager[1081]: [1525055524.4306] vpn-connection[0x55b06808e200,eb16b7fa-3167-426b-aa1a-0fa1e344b409,"Australia,Sydney2-udp",0]: VPN connection: (ConnectInteractive) reply received Apr 30 12:32:04 gw nm-openvpn[3210]: OpenVPN 2.4.4 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Feb 10 2018 Apr 30 12:32:19 gw nm-openvpn[3210]: VERIFY ERROR: depth=0, error=CA signature digest algorithm too weak: C=HK, ST=HK, L=HongKong, O=PureVPN, OU=IT, CN=PureVPN, name=PureVPN,