I am using Zentyal 4.2 Commercial. After the latest update and restart openvpn stopped to work
Mon Aug 14 08:37:51 2017 OpenVPN 2.3.2 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [eurephia] [MH] [IPv6] built on Jun 22 2017
Mon Aug 14 08:37:51 2017 Diffie-Hellman initialized with 1024 bit key
Mon Aug 14 08:37:51 2017 Cannot load private key file /var/lib/zentyal/CA/private/vpn-{company}.pem: error:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch
Mon Aug 14 08:37:51 2017 Error: private key password verification failed
Mon Aug 14 08:37:51 2017 Exiting due to fatal error