MySQL issue - changing password failed

1. First enter the MySQL environment

mysql -h localhost -p3306 -u root -p

prompt for password

Enter password: *******

2. Modify the password:

First enter: flush privileges;

flush privileges;

Then enter: ALTER USER 'root'@'localhost' IDENTIFIED BY '12345';

ALTER USER 'root'@'localhost' IDENTIFIED BY '12345';

[ 12345 is the new password]