Could not load type 'Microsoft.Exchange.Management.Security.AdfsFederationAuthModule'

After installing Exchange 2013 Beta, I got the following error when entering the new web based management console.

Could not load type 'Microsoft.Exchange.Management.Security.AdfsFederationAuthModule'.

  Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

To resolve this I installed the following features:

-          Windows Identity Foundation 3.5

Do a IIS reset, and it should work.

WIF3.5 is a requirements for Exchange 2013, but is not installed as part as the installation. This might be a bug in the beta. The link below describes the requirements:
http://technet.microsoft.com/en-us/library/bb691354(v=exchg.150).aspx