I just got a new Microsoft Wireless Display Adapter, plugged it into the TV, and tried to connect with my Surface Pro 3. One or both would say "connecting" at various times, but it wouldn't actually connect. Then neither would say "connecting."
Then I noticed that my Surface WiFi connection was down, which isn't something that happens normally.The Surface refused to connect to the WiFi network when I tried. So I rebooted the Surface, and it connected almost instantly both to the WiFi and the Wireless Display Adapter. I installed the Wireless Display Adapter app and the Adapter firmware update.
I left the room and the Surface went to sleep and lost the connection to the Adapter and the WiFi (normal). When I woke it up, it again wouldn't connect to the Adapter, and I saw that again the WiFi wouldn't connect either. Reboot, AOK.
All devices have all updates applied. I'm not running 3rd party antivirus software. I don't use a VPN.
Any suggestions on how to make this more reliable?