78947http://bugs.mysql.com/bug.php?id=78947ClosedMySQL WorkbenchCannot Connect to Database Server: Unsupported option provided to mysql_options(Connecting to a database server using connection method "Standard TCP/IP over SSH" (private key authentication) with "Use old authentication protocol" enabled. Upon attempt to connect to database server, get error: Cannot Connect to Database Server Your connection attempt failed for user 'username' from your host to server at 'server name':3306: Unsupported option provided to mysql_options() Please: 1 Check that mysql is running on 'server name' 2 Check that mysql is running on port 3306... 3 Check that username has rights to connect to... 4 Make sure you are both providing a password if needed... The issue occurs with connecting to MySQL server version 5.0.90 and 5.5.18. When deselecting the option "Use the old authentication protocol", I receive a Malformed packet error message. I was able to connect properly with version 6.3.4 and was able to connect again properly after downgrading back to 6.3.4 from 6.3.5. I tried both repairing my 6.3.5 installation as well as uninstalling it completely and reinstalling. Also try creating a new connection in the MySQL Connections area. 12166284144561338014497687396.3.5Windows (7 Pro)AnyS3 (Non-critical)