The Select the network adapter to be used for Remote Desktop IP Virtualization machine setting should be configured correctly. This policy setting specifies the IP address and network mask that corresponds to the network adapter used for virtual IP addresses. The IP address and network mask should be entered in Classless Inter-Domain Routing notation; for example, 192.0.2.96/24. If you enable this policy setting, the specified IP address and network mask are used to select the network adapter used for the virtual IP addresses. If you disable or do not configure this policy setting, Remote Desktop IP Virtualization is turned off. A network adapter must be configured for Remote Desktop IP Virtualization to work. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Application Compatibility\Select the network adapter to be used for Remote Desktop IP Virtualization (2) KEY: HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\TSAppSrv\VirtualIP\VIPAdapter