Access denied when accessing EAC

When you access the new Exchange Admin Center in Exchange Server 2013 (currently beta 2), you might receive an access denied when you login, like the one below.

Cause:

Your Admin account is, on a lower Exchange version like Exchange 2010 or Exchange 2007.

Solution:

You can either move you admin account from powershell with the move-mailbox cmdlet or instead attached the last part of this url (with bold): https://servername.company.local/ecp?exchClientver=15