How to reset/change MariaDB root password?

ERROR 1698 (28000): Access denied for user ‘root’@’localhost’ … comes the message. Server version: 10.1.35-MariaDB-1 So, you did not mess with your server. You are fairly certain others have not messed with it. So what could have happened? Well,┬ácount me in. I have all the security updates enabled. Only have auto-updated WP sites, secured MySQL,