The latest MySQL servers come with a validate password plugin. This plugin configures a password policy to make server MySQL more secure.
While changing the password, I got the error: ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
Remove MySQL Validate Password Plugin
In this option, you can simply uninstall the validate_password plugin from your MySQL server. Login to the MySQL command prompt as root user and run the following command on command prompt.
mysql> uninstall plugin validate_password;
Query OK, 0 rows affected (0.05 sec)
If you don’t need to uninstall the plugin, then simply change the password policy of MySQL.