Authentication denied. Direct console access has been disabled by the administrator for hostname

When you log in as root directly to DCUI, you see this message:
Authentication denied. Direct console access has been disabled by the administrator for hostname.

You cannot even use vSphere Client, vSphere Web Client to access the ESXi host. But you can use SSH only to connect the ESXi





Then how to resolve this Issue:-

1. Restart all the services of ESXi (via SSH)

./sbin/services.sh restart

2. Then Reboot the ESXi