This will show the current policies applied to the PC.
Hotfix 3120232 is highly recommended for Surface Pro 3 and Surface Pro 4 if they are on an older Wi-Fi driver.
In Device Manager, open the Wi-Fi adapter and video adapter and check for an updated driver version.
It is also a good idea to ensure the latest drivers and updates are installed on the projecting device. Also, some Group Policy and firewall settings may be tied to a Wi-Fi network. This will eliminate any channel switching between the access point channel and the Miracast channel set on Surface Hub. Again, for troubleshooting, disconnect the projecting device from any Wi-Fi networks.
If the projecting device is running Windows, it should be Windows 8.1 or newer for full Miracast support. It is also possible that the connect issue can be the result of a problem on the connecting device. Generally speaking, you will want to use channels that do not show heavy utilization from the network scan. You will need to restart Surface Hub after each change. You can manually select the Miracast channel in Settings. For troubleshooting purposes, disconnect Surface Hub from any Wi-Fi networks (but keep Wi-Fi enabled), so you can control the channel used for Miracast. When Surface Hub is connected to a Wi-Fi network it will use the same channel settings as the Wi-Fi access point for its Miracast access point.
If Surface Hub's Miracast network shows up on the scan, but you cannot not see it as an available device, you can try to adjust the Miracast channel used by Surface Hub. If you ran a network scan, you should see Surface Hub Miracast listed as an access point. Connect issuesĮnsure both Wi-Fi and Miracast are both enabled in Settings on Surface Hub. Running a network scanning tool will show you the available networks and channel usage in the environment. In either case, it is a good idea to get a general picture of wireless network activity in the Surface Hub's location. There are generally two types of issues with Miracast to Surface Hub: connection and performance. If Surface Hub is connected to a Wi-Fi network, the access point, it will use the same channel as the connected network, otherwise it will use the Miracast channel from Settings.