After everything is working with IP address assigned, DNS and gateway, we started to try to access using the Host Client using IE 11.
Encounter this message "cannot complete login due to an incorrect user name or password". Thought that might have entered the wrong password. Type in a notepad and copy and paste. Same error message encountered on both servers.
Did some search but never encounter anyone having the same issue other than old post found on ESXi 6.0 with the old vSphere Client. Decide to try out one of the method.
Head right down to both server and use the DCUI and select Change Password option. Use back the same password. Walah! Host Client works now.
Very strange behaviour. Apparently during installation seems like the host client didnt register the password.
Hope this help for those encountering the same issue.