Troubleshoot access denied for user & #39;& #39;localhost& #39 of #39;@&; To Database & #39;mysql& #39;

After changing the root user of MySQL password, and then landing, prompting for errors such as the title, after finding an answer, the final solution, the process such as the following:

1. Stop Mysql:service mysqld Stop

2. Log in to MySQL using an unauthenticated state:

Mysqld_safe--skip-grant-tables &//Backstage execution

Start Mysql:service mysqld Start

3. Enter Mysql:mysql-u root

4.use MySQL;

5.delete from user where user= '; Remove Empty users

6.flush Previlige; Refresh Permissions

7.service mysqld Restart

8. Problem solving

Troubleshoot access denied for user & #39;& #39;localhost& #39 of #39;@&; To Database & #39;mysql& #39;