OpenVPN 接続時 failed to negotiate cipher with server になる - Qiita概要 Windows11 でOpenVPNを使って接続を試したところ、下記のエラーが赤字で表示されて接続できない 2023-10-13 13:07:20 OPTIONS ERROR: failed to negotiate cipher with server. Add the server's cipher ('AES-128-CBC') to --data-ciphers (currently 'AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305') if you want to connect to this server. 2023-10-13 13:07:20 ERROR: Failed to apply push options 2023-10-13 13:07:20 Failed to open tun/tap interface ※iPhon
