Connection test failed: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client code example

Example 1: 'Client does not support authentication protocol requested by server; consider upgrading MySQL client', sqlState: '08004',

$ mysql -u root -p
Enter password: (enter your root password)

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'your_new_password';
mysql> FLUSH PRIVILEGES;
mysql> quit

Example 2: mariadb ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MariaDB client

#SQLTools - VSCode err: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MariaDB client

sudo mysql -u root
MariaDB [(none)]> update mysql.user set password=password('<yourpassword>') where user='root';
MariaDB [(none)]> flush privileges;

-------------------------------------------------------------

sudo mysql -u root -p
  Enter password: *******
select user,host,password,plugin from mysql.user;

output:
  +------+-----------+------------------------+-------------+
  | user | host      | password               | plugin      |
  +------+-----------+------------------------+-------------+
  | root | localhost | *****************      | unix_socket |
  | root | e320      | *****************      | unix_socket |
  | root | 127.0.0.1 | *****************      | unix_socket |
  | root | ::1       | *****************      | unix_socket |
  +------+-----------+------------------------+-------------+
  
-------------------------------------------------------------

sudo mysql -u root -p
  Enter password: *******
update mysql.user set plugin='' where user='root';
flush privileges;

Example 3: Couldn't connect :( Error: Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client 2020

Couldn't connect :(    Error: Error: ER_NOT_SUPPORTED_AUTH_MODE: Client does not support authentication protocol requested by server; consider upgrading MySQL client