Before troubleshooting, confirm if your hardware actually supports Miracast:
If you see the message "Your device doesn't support Miracast" on Windows 11, it typically means your device doesn t support miracast windows 11
Enable Wi-Fi: Miracast requires Wi-Fi to be ON, even if you are connected via Ethernet. Going to the Microsoft website and searching for
Miracast requires the Intel/AMD/NVIDIA driver to support "Indirect Display". If you see the message "Your device doesn't
After reboot, try Win + K again.