ERROR 1044 (42000): Access denied for user Restore the MySQL root user’s full privileges?

Access denied for user 'root'@'%'

I am able to login fine :
 mysql -u root -p

mysql>  GRANT SELECT, LOCK TABLES,EXECUTE  ON `dbname`.* TO 'dbuser'@'xx.xx.xx.xx' IDENTIFIED BY '[password]' WITH GRANT OPTION;
ERROR 1044 (42000): Access denied for user 'dbuser'@'xx.xx.xx.xx' to database 'dbanme'


SELECT `User`, `Grant_priv` FROM `mysql`.`user` WHERE `User` = 'root';

You will probably notice it returns a 'N' for Grant_priv. So do this:

UPDATE `mysql`.`user` SET `Grant_priv` = 'Y' WHERE `User` = 'root';
FLUSH PRIVILEGES;
SELECT `User`, `Grant_priv` FROM `mysql`.`user`;