To change your Magento admin password, go to your cPanel > phpMyAdmin, select your Magento database, click the SQL tab and paste this query:

UPDATE admin_user SET password=CONCAT(MD5('newpass'), ':newpass') WHERE username='AdminUsername';
Note: You have to change newpass in the MD5('newpass') with your new password, and change *AdminUsername* to your Magento admin username.
Execute the query by clicking the Go button and your password will be changed.

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