Open Server Manager, Roiles, Files Services, Install Windows Search Services under the File Services role. Do not add any disk drive for indexing. Put the RDS server in install mode (change users /install), start Outlook 2013. Now the installation screen is gone. Put the RDS server in Execution mode (change user /execute) and the problem is solved.
http://social.technet.microsoft.com/Forums/en/officesetupdeploy/thread/b8e8277c-a2f9-426a-bb3d-3f45bd0a47fc