Windows: Bluetooth Headset Connected but No Sound and No Microphone
On Windows 10/11, the headset shows Connected, but the music stays on the laptop speakers and no application lists the microphone. Re-pairing fixes it, until the next time.
A Bluetooth headset is two independent device stacks, and the "Connected" badge only covers the Bluetooth link. This post reads both stacks from the registry, and restarts the single PnP device that is stuck.