A company I work with has had openvpn running for a couple of years now and I've never had issues connecting to it with a windows 7 pc. However I have not been able to connecting using any of three windows 10 pcs. I know almost nothing about openvpn config and the admin that is in charge of this is busy, and not an openvpn expert. This issue has been pending for a few months so am asking for help here.
This is the tail end of the error returned with attempted connections on the windows 10 machines:
Wed Sep 25 12:15:50 2019 us=570827 WARNING: No server certificate verification method has been enabled. See
http://openvpn.net/howto.html#mitm for more info.
Wed Sep 25 12:15:50 2019 us=570827 OpenSSL: error:140AB18E:SSL routines:SSL_CTX_use_certificate:ca md too weak
Wed Sep 25 12:15:50 2019 us=570827 MANAGEMENT: Client disconnected
Wed Sep 25 12:15:50 2019 us=570827 Cannot load certificate file client.crt
Wed Sep 25 12:15:50 2019 us=570827 Exiting due to fatal error
I have suggested to the admin in charge of the network that there is a config error on his side, but he hasn't responded to that suggestion. Can anyone here tell me what the issue is?
In desparation I have tried using older installers and config files that I know worked on the windows 7 boxes on the windows 10 pcs, but they fail with a different error. So another question is, is it required to use the windows 10 install file on a windows 10 pc? If so I can skip attempting to connect with older versions of openvpn.
here is an example of the config file that the admin has asked me to use, I've munged the connect url of course:
client
dev tap
proto udp
dev-node NETGEAR-VPN
remote 52.20.141.8 12979
resolv-retry infinite
nobind
persist-key
persist-tun
ca ca.crt
cert client.crt
key client.key
cipher AES-128-CBC
comp-lzo
verb 5
