Omid Shojaee wrote
Hello,
When the authentication method is user+pass, Client Certificate and Key must be included in the client config file?
it's not required if you set the
client-cert-not-required option on the server or the more recent option
verify-client-cert none
but the CA is required on the clients to be able to verify the server's certificate
check the manual page for more info
https://openvpn.net/community-resources/reference-manual-for-openvpn-2-4/