C:\Program Files\MariaDB 10.2\bin>mysql admin -u root password "x123456789" mysql Ver 15.1 Distrib 10.2.4-MariaDB, for Win64 (AMD64) Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others. C:\Program Files\MariaDB 10.2\bin>mysql -u root -p Enter password: ********** Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 14 Server version: 10.2.4-MariaDB mariadb.org binary distribution Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> set password for 'root'@'localhost'=password('x123456789'); Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.00 sec)