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Wednesday, 21 March 2018

How to reset MySQL root password in windows ?

Reset MySQL Root Password: Windows Systems
In this article, I am discussing about how to reset MySQL Root password for 'root'@'localhost'  once you forget or lost.
To change the password for a root account with a different host name part, modify the instructions to use that host name.

1. Log on to WINDOWS 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: From the Start menu, select Control Panel, then Administrative Tools, then Services. 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 containing the password-assignment statement on a single line. Replace the password with the password that you want to use.
in MySQL 5.7.6 and later:
ALTER USER 'root'@'localhost' IDENTIFIED BY 'GetMySQL';

in MySQL 5.7.5 and earlier:
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('GetMySQL');

4. Save the file. This example assumes that you name the file C:\mysql-init.txt.

5. Open a console window to get to the command prompt: From the Start menu, select Run, then enter cmd as the command to be run.

6. Start the MySQL server with the special --init-file option (notice that the backslash in the option value is doubled):

C:\Program Files\MySQL\MySQL Server 5.6>cd bin

C:\Program Files\MySQL\MySQL Server 5.6\bin>mysqld.exe --init-file= C:\\mysql-init.txt

If you installed MySQL to a different location, you can change the command line accordingly.

C:\Program Files\MySQL\GetMySQL\MySQL Server 5.6>cd bin

C:\Program Files\MySQL\GetMySQL\MySQL Server 5.6\bin>mysqld.exe --init-file=C:\\mysql-init.txt

The server executes the contents of the file named by the --init-file option at startup, changing the'root'@'localhost' account password.

To have server output to appear in the console window rather than in a log file, add the --console option to the mysqld command.

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

C:\> mysqld
         --defaults-file="C:\\ProgramData\\MySQL\\MySQL Server 5.7\\my.ini"

The appropriate --defaults-file setting can be found using the Services Manager: From the Start menu, select Control Panel, then Administrative Tools, then Services. Find the MySQL service in the list, right-click it, and choose the Properties option. The Path to executable field contains the --defaults-file setting.

7. After the server has started successfully, delete C:\mysql-init.txt.

You should now be able to connect to the MySQL server as root using the new password.

If the ALTER USER statement fails to reset the password, try repeating the procedure using the following statements to modify the user table directly:

UPDATE mysql.user
    SET authentication_string = PASSWORD('MyNewPass'), password_expired = 'N'
    WHERE User = 'root' AND Host = 'localhost';

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