The Network Projector Port Setting machine setting should be configured correctly. This policy setting allows you to select the TCP port the Network Projector will use to send packets. If you leave the 0, the operating system will select a port. If you select a TCP port that is already in use by a system, the Network Projector will fail to initialize. If you enable this policy setting, you can customize a TCP port for the Network Projector. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Network Projector\Network Projector Port Setting (2) KEY: HKLM\Software\Policies\Microsoft\NetworkProjector\NetworkProjectionPortNo