MYSQL(解决方法):Client does not support authentication

　　mysql4.1以上版本连接时出现Client does not support authentication protocol问题解决办法 shell> mysql Client does not support authentication protocol requested by server; consider upgrading MySQL client 官方的说法是 MySQL 4.1 and up uses an authentication protocol based on a password hashing algorithm that is incompatible with that used by older clients. ..... 如果你升级mysql到4.1以上版本后遇到以上问题,请先确定你的mysql client 是4.1或者更高版本.(WINDOWS下有问题你就直接跳到下面看解决方法了,因为MYSQL 在WINDOWS是client和server一起装上了的) 请使用以下两种方法之一 其一: mysql> SET PASSWORD FOR -> 'some_user'@'some_host' = OLD_PASSWORD('newpwd'); 其二: mysql> UPDATE mysql.user SET Password = OLD_PASSWORD('newpwd') -> WHERE Host = 'some_host' AND User = 'some_user'; mysql> FLUSH PRIVILEGES; 上面的部分请按自己实际情况修改.... 这样做后,连接就会正常了@!