Access Denied Error from phpMyAdmin
This tutorial will show you to remove the Access Denied Error from phpMyAdmin 
When you try and load phpMyAdmin from cPanel’s WHM, a message saying access denied appears. There is a very simple solution to this.
- From WHM, under SQL Services, click MySQL Root Password. Enter in a password and save it.
- Try loading up phpMyAdmin again from web host manager and it should be fine. No SSH commands, no configuration files – type and click.