Miracast is a wireless technology that lets you mirror or extend your Windows 11 screen to a TV, projector, or external monitor without HDMI cables. But when you try to connect (via or Settings > Bluetooth & devices > Add device ), you might see:
Before troubleshooting, verify if your system is capable of Miracast. Even if you see an error, the hardware might still be compatible but simply misconfigured. windows 11 your device doesn't support miracast