mysql 1045 - Access denied for user 'root'@'*.*.*.*' (using password YES)

mysql -uroot -hlocalhost -P3306 -p
Enter password: 
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Your MySQL connection id is 12
Server version: 5.6.39 MySQL Community Server (GPL)

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mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

mysql> UPDATE user SET Password=PASSWORD(‘newpassword‘) where USER=‘root‘;
Query OK, 4 rows affected (0.01 sec)
Rows matched: 5  Changed: 4  Warnings: 0

mysql> FLUSH PRIVILEGES; 
Query OK, 0 rows affected (0.00 sec)