Reset your MySQL root password in 7 easy steps

By default, MySQL Server will be installed with root superuser without any password. You can connect to MySQL server as root without requiring password or by keying in blank password. However, if you have set the password for root and forget or unable to recall the password, then you will need to reset the root password for MySQL.

MySQL Reference Manual has detail steps on how to reset password for root which are as below:

The procedure under Windows:

1.) Log on to the Windows system where MySQL is running as Administrator.

2.) Stop the MySQL server if it is running. For a server that is running as a Windows service, go to the Services manager:
Start Menu -> Control Panel -> Administrative Tools -> Services

Then find the MySQL service in the list, and stop it.

If your server is not running as a service, you may need to use the Task Manager to force it to stop.

3.) Create a text file and place the following command within it on a single line:
SET PASSWORD FOR ‘root’@'localhost’ = PASSWORD(‘MyNewPassword’);

Save the file with any name. For this example the file will be C:\mysql-init.txt.

4.) Open a console window to get to the DOS command prompt:
Start Menu -> Run -> cmd

5.) If MySQL is installed in C:\mysql. If MySQL is installed in another location, adjust the following commands accordingly.
At the DOS command prompt, execute this command:

C:\> C:\mysql\bin\mysqld-nt –init-file=C:\mysql-init.txt

The contents of the file named by the –init-file option are executed at server startup, changing the root password. After the server has started successfully, you should delete C:\mysql-init.txt.

If you installed MySQL using the MySQL Installation Wizard, you may need to specify a –defaults-file option:

C:\> “C:\Program Files\MySQL\MySQL Server 5.0\bin\mysqld-nt.exe”
–defaults-file=”C:\Program Files\MySQL\MySQL Server 5.0\my.ini”

The appropriate –defaults-file setting can be found using the Services Manager:

Start Menu -> Control Panel -> Administrative Tools -> Services

Find the MySQL service in the list, right-click on it, and choose the Properties option. The Path to executable field contains the –defaults-file setting. Be sure to supply the –init-file argument with the full system path to the file, regardless of your current working directory

6.) Stop the MySQL server, then restart it in normal mode again. If the MySQL server is ran as a service, start it from the Windows Services window. If you start the server manually, use whatever command you normally use.

 7.) Connect to MySQL server by using the new password.

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