mysql安装错误，第一遍安装时忘记关闭防火墙，卸载了再次安装，出错。

Question

第一遍安装时忘记关闭防火墙，导致安装无响应，强制关闭后，卸载了再次安装，在设定密码时要求输入原密码，第一次时并没运行到设置密码阶段，导致安装失败1045。
各位大侠请指教我该怎么办才能安装成功啊？

Answer 1

先卸载MYSQL，然后删除MYSQL残余的文件（安装目录）、最好点击开始——运行——输入REGEDIT——编辑——查找——输入SQL——然后一个个查下去，带SQL的全部删除。

Answer 2

我认为 以下方法我已经试过了可行。 Mysql安装错误 解决方法 关键字: mysql ***************************************************************************************** The security settings could not be applied to the database because the connection has failed with the following error. Error Nr. 2003 Can't connect to MySQL server on 'localhost' (10061) 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. ***************************************************************************************** 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. MySQL 5.1 安装过程