PHP+MySQL old-passwords问题求助

[edgesun]

本地WIN10 + IIS10 + PHP5.5 + MySQL5.5，登陆后台时出现如下提示：

mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. Please use an administration tool to reset your password with the command SET PASSWORD = PASSWORD('your_existing_password'). This will store a new, and more secure, hash value in mysql.user. If this user is used in other scripts executed by PHP 5.2 or earlier you might need to remove the old-passwords flag from your my.cnf file

网上搜到解决方法如下：

SET old_passwords = 0;
UPDATE mysql.user SET PASSWORD = PASSWORD( 'root' ) WHERE User = 'root' LIMIT 1 ;
SELECT LENGTH( PASSWORD ) FROM mysql.user WHERE User = 'root';
FLUSH PRIVILEGES ;

但实测后仍是上面错误，mysql和iis都重启了。请问这个问题到底应该怎么解决？谢谢！


问题已解决，上面的方法没有问题。