This is expected behavior for many Bluetooth headsets.
A Bluetooth headset often cannot use high-quality stereo audio and the built-in microphone at the same time over the standard Bluetooth profiles. In practice, that means:
- High-quality audio mode: playback works well, but the headset mic may not be available.
- Headset/microphone mode: the mic works, but audio quality drops.
If Hands-Free Telephony was disabled for the headset, that can also remove microphone support while keeping better audio playback.
What to check in Windows:
- Make sure the headset is paired and connected in Start > Settings > Bluetooth & devices.
- Open Start > Settings > System > Sound.
- Under Input, check whether the Bluetooth headset microphone appears as a selectable input device.
- Test the microphone from the device properties page using Start test under Microphone test.
- If the headset is connected but audio behavior is unstable, update or reinstall the Bluetooth and audio drivers in Device Manager:
- Expand Bluetooth and update the Bluetooth driver.
- Expand Sound, video and game controllers and update the audio driver.
- If needed, uninstall the device, restart the PC, and let Windows reinstall it.
- Check the headset manufacturer for any firmware updates, then restart both the headset and the PC and reconnect.
If the goal is to use the headset mic and keep high-quality audio at the same time, the supported answer in this scenario is usually:
- use the headset in headset/hands-free mode and accept lower audio quality, or
- use a separate microphone, or
- use a headset with a dedicated USB dongle if the manufacturer supports simultaneous high-quality audio and mic.
- Context disabling telephony=not detecting my microphone in bluetooth headset - Microsoft Q&A Good day,\nI've tried to disable my telephony today because whenever I play an FPS game my audio becomes low quality/ hands free mode. Disabling it worked like magic and now my audio became so much clearer. however after doing so I saw that my input device doesnt detect my microphone anymore thats built-in on my headset. Is there a way to fix this?
- Fix microphone problems
- Fix Bluetooth problems in Windows
- Bluetooth audio device bug - Microsoft Q&A
- Fix Bluetooth audio only playing in one channel