mysql问题之：the security settings could not be applied to

在安装mysql时，出现“The security settings could not be applied to the database because the connection has failed with the following error. Error Nr. 1045 Access denied for user 'root'@'localhost' (using password: YES)” 解决办法：
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在装mysql时，总是到最后启动的时候出错，出错内容如下：

就是最后的Apply security setting过不去

提示：

The security settings could not be applied to the database because the connection has failed with the following error.

Error Nr. 1045

Access denied for user 'root'@'localhost' (using password: YES)

If a personal firewall is running on your machine, please make sure you have opened the TCP port 3306 for connections. Otherwise no client application can connect to the server. After you have opened the port please press [Retry] to apply the security settings.

If you are re-installing after you just uninstalled the MySQL server please note that the data directory was not removed automatically. Therefore the old password from your last installation is still needed to connect to the server. In this case please select skip now and re-run the Configuration Wizard from the start menu.

解决方法：

1, 卸载MySQL

2, 删除目录 C:\Documents and Settings\All Users\Application Data\MySQL

3, 重新安装MySQL 就好了

如何你C:\Documents and Settings\All Users下没有Application Data文件夹，选择：工具——文件夹选项——查看——选择显示所有文件和文件夹

这样的就行，不过，上面的设置都是默认安装时，数据库文件所在的问题，如果你是自定义安装的话，要根据自己的实际情况来删除上面的提到文件。

自己测试过，没有问题。