Every time Outlook 2013 is launched on a Windows Server 2008 R2 server through remote desktop this installation screen pops up. I tried uninstalling Office and re-installing it to no avail. After some poking around forums and web searches I ran across a suggestion to install Windows Search under the File services role. This fixed the issue. Open Server Manager and right click File Services under Roles, select add role services and check the Windows Search Service.