Whilst using WebMartix for Demos I sometimes forget the password I used to set up a system and end up having to uninstall and reinstall MySQL just because I want to reset the password. A colleague pointed out to me that on the MySQL website they have a guide on how you can easily reset the password as long as you are an administrator on the server. I’ve reposted the guide below for reference making a few changes to reflect the fact that I have a Windows 2008 R2 server.
On Windows, use the following procedure to reset the password for all MySQL
Log on to your system as Administrator.
Stop the MySQL server if it is running. For a server that is running as a Windows service, type Services in the program search and select Services . Find the MySQL service in the list, right click it and choose stop.
If your server is not running as a service, you may need to use the Task Manager to force it to stop.
Create a text file containing the following statements. Replace the password with the password that you want to use.
UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root'; FLUSH PRIVILEGES;
FLUSHstatements each on a single line. The
UPDATEstatement resets the password for all
rootaccounts, and the
FLUSHstatement tells the server to reload the grant tables into memory so that it notices the password change.
Save the file. For this example, the file will be named
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 special
--init-fileoption (notice that the backslash in the option value is doubled):
C:\> "C:\Program Files\MySQL\MySQL Server 5.1\bin\mysqld" --init-file=C:\\mysql-init.txt
If you installed MySQL to a location other than
C:\Program Files\MySQL\MySQL Server 5.1\, adjust the command accordingly.
The server executes the contents of the file named by the
--init-fileoption at startup, changing each
You can also add the
--consoleoption to the command if you want server output to appear in the console window rather than in a log file.
If you installed MySQL using the MySQL Installation Wizard, you may need to specify a
"C:\Program Files\MySQL\MySQL Server 5.1\bin\mysqld.exe" --defaults-file="C:\\Program Files\\MySQL\\MySQL Server 5.1\\my.ini" --init-file=C:\\mysql-init.txt
--defaults-filesetting 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
Path to executablefield contains the
After the server has started successfully, delete
You should now be able to connect to the MySQL server as
root using the new password. Stop the MySQL server (you do this by opening up the task manager and stopping the mysqld.exe by right clicking) , then restart it in normal mode again. 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.