A: To enable RemoteFX, the graphics card in the server must use a WDDM driver. However, most baseboard management controllers need to use an XDDM driver, which can't run the same time as the WDDM driver. DRAC is the Dell baseboard management solution (Dell Remote Admin Card) and ILO is the HP solution (Integrated Lights Out), both of which are designed to give full remote access to the server at all times.
The solution is to use an RDP connection to manage the Hyper-V host while the Windows OS is running. However, you can enable a RemoteFX CAP driver that enables the baseboard management controller to connect during the BIOS sequence, Windows Safe mode, or when Windows system is in a stop error state.
You must enable the RemoteFX CAP after you've enabled RemoteFX on the server. Then run the command below, then reboot the server.
dism /online /enable-feature /featurename:Microsoft-Windows-RemoteFX-EmbeddedVideoCap-Setup-Package