Answer Description

SERVICES.MSC is where you change the startup configurations for services in Windows. DXDIAG is a tool for troubleshooting DirectX sound/video issues. Port 3389 is the port for RDP, but the port being blocked was not the issue. Adding the RDP gateway to an adapter is a made up answer.

Wikipedia

Remote Desktop Services (RDS), known as Terminal Services in Windows Server 2008 and earlier, is one of the components of Microsoft Windows that allow a user to take control of a remote computer or virtual machine over a network connection. RDS is Microsoft's implementation of thin client architecture, where Windows software, and the entire desktop of the computer running RDS, are made accessible to any remote client machine that supports Remote Desktop Protocol (RDP). User interfaces are displayed from the server onto the client system and input from the client system is transmitted to the server - where software execution takes place. This is in contrast to application streaming systems, like Microsoft App-V, in which computer programs are streamed to the client on-demand and executed on the client machine. RemoteFX was added to RDS as part of Windows Server 2008 R2 Service Pack 1.