If you assigned a root password previously but have forgotten it, you can assign a new password.
On Windows, use the following procedure to reset the password for the MySQL 'root'@'localhost'
account. To change the password for a root
account with a different host name part, modify the instructions to use that host name.
- Log on to your system as Administrator.
- Stop the MySQL server if it is running.
- Create a text file containing the password-assignment statement on a single line. Replace the password with the password that you want to use.
1
ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';
- Save the file. This example assumes that you name the file
C:\mysql-init.txt
. - 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.
- Start the MySQL server with the
init_file
system variable set to name the file (notice that the backslash in the option value is doubled):If you installed MySQL to a different location, adjust the cd command accordingly.1
2C:\> cd "C:\Program Files\MySQL\MySQL Server 8.0\bin"
C:\> mysqld.exe --init-file=C:\\mysql-init.txt
The server executes the contents of the file named by the init_file
system variable 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 and --datadir
option. For example:
1 | C:\> mysqld.exe |
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.
- 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. Stop the MySQL server and restart it normally. If you run the server as a service, start it from the Windows Services window. If you start the server manually, use whatever command you normally use.