Miracast Connection Blocking

Since Miracast will hit the public profile in Windows Defender firewall, you will encounter issues connecting to a Miracast display (such as a Surface Wireless Display Adapter) if you enable Shielded mode in your Windows Defender firewall policy. This can be checked in MEM (Intune) under Endpoint Security -> Firewall -> Firewall Policy. In the configuration settings, check to ensure that Enable shielded mode is set to No on the public profile.