http://blogs.technet.com/server_core/archive/2009/05/27/Server-core_2C00_-application-development-and-fxcop.aspxServer Core is a new Windows installation option introduced in Windows Server 2008. The original Windows Server 2008 Server Core did not include . NET -- and that limited the things you could use it for. In Windows Server 2008 R2, Server Core includesenCommunityServer 2.1 SP1 (Build: 61025.2)