The headphone appears in the playback devices as headset and a stereo headphone, and the headset is only one that have the sound when it is default. the other one is showing there is sound but actually there is nothing.

Also of note: When the Sound Properties control panel is open, I don't get audio to the headphones, however, it starts working again once Sound Properties is closed. When the Sound Properties control panel is open, it is playing the headset's microphone input to the headset rather than playing the computer's audio output to it for some bizarre reason.

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I just ran into a similar situation, only hands-free, no stereo. Device manager indicated something wrong with Microsoft Bluetooth A2dp source. The solution is to Run the System File Checker tool. Got the idea from here(WH-1000XM3, Windows 10 pro 1903)

I had to go to 'Devices and Printers' in Control Panel. Then there under 'Devices' I found the bluetooth speaker, and pressed right button on the bluetooth speaker and pressed 'Remove Device'. Afterwards connected through Bluetooth again and it had to set it up as a new device and it made it work perfectly.

My problem showed the stereo headset and hands free but only the hands free would be enabled no matter what I did. After several other methods I was able to fix it by removing the device and adding/pairing it again.

I had the exact same problem in windows 10, my Haylou GT1 pro Headphones were only working as hands-free and the music sounded awful. I tried all solutions posted above and nothing worked. However, I was testing a new audio app and it wasn't recognizing my mic, it was telling me that it was already in use, the only app that always uses the mic is Cortana, so I removed the permission for the microphone from cortana and my headphones STARTED to work perfectly.

sadly this is a known bug microsoft refuses to fix when it comes to bluetooth devicesthe only acceptable solution I have found to when I turn my headphones off for the night and go to use them again is to simply toggle off the bluetooth connectivity on windows ENTIRELY then turn it back on when the headset connects in "connected voice" rather than "connected voice, music" despite me having the default audio device set to avoid the "hands free" mode ENTIRELYit is a known issue purely with windows that bluetooth audio is unreliable and buggy yet the company refuses to debug itmaybe buy one of those little boxes that takes the 3.5mm jack and connects your headphones to it in "media" mode and never bugs outalso if you are like me maybe complain about this known issue to Microsoft that mac-os and linux and all mobile os'es have fixed since day 1 of full release versions

Downgrading drivers also didn't do the trick for me.I fixed it by installing for the faulty playback device. Afterwards not only the bluetooth device but also the playback device appeared as connected and I am now able to play audio via the Bluetooth speaker. In short this works because Equalizer APO interacts with the speaker on a lower system level and bypasses some parts of the Bluetooth- and audiostack.

I was experiencing the same issue! When I unchecked Handsfree telephony, my computer just stopped playing audio to my Bluetooth headphones. Why don't you try this solution? It completely fixed the problem for me.

I pair with the device using an application I wrote. Once the connection is made I store the device address and the GUID of the headset profile in [HKEY_LOCAL_MACHINE\Software\Microsoft\Bluetooth\AudioGateway\Device\1] so the AG will be able to know that it has a device connected.

In my BT chip (Wi2Wi) it says that the PCM works with an SCO connection, but not thourgh the regular HCI stack. So I am now trying to see how to tell the BT chip to route audio for a certain SCO connection throuhg the PCM interface.

In the end, I have the AG up and running and the BTScoSnd driver running as well. I pair with the headset and the BTScoSnd driver creates the SCO link with the device. I then give the cellular module the command to divert all audio to the correct PCM interface and then I have both audio in and audio out in the headset. All the link handling is done by the BT controller (BluetoothCore4 CSR based chip) that is configured by default to route SCO connections to the PCM interface without going through the HCI layer.

In bypass mode, Bluetooth audio control path flows through a hardware connection other than the host controller interface (HCI), such as I2S, to the Bluetooth controller. This other hardware connection is often I2S, but can be any interface determined by the Bluetooth host controller. This connection is referred to as a "bypass" or "sideband" connection.

While audio I/O occurs through the bypass connection, the over-the-air synchronous connection oriented (SCO) audio stream is still managed through the HCI. Windows 8 provides a Bluetooth Hands-Free Profile (HFP) driver to simplify managing the SCO connection and other aspects of the Hands-Free Profile. However, a custom audio driver controls audio data I/O between Windows and the bypass connection.

The HFP driver and the custom control driver for audio I/O data have separate roles, requiring efficient communication between them. This communication is handled by a set of IOCTLs passed from the custom audio driver to the Windows HFP driver.

Typically, the bypass connection is always present. The Plug and Play (PnP) service enumerates the hardware that includes this connection and loads the required audio driver. However, the audio system may or may not have any HFP headsets paired, and the bypass connection is only useful if at least one HFP headset is paired.

For each paired HFP device, the Windows HFP driver registers and enables a device interface in the GUID_DEVINTERFACE_BLUETOOTH_HFP_SCO_HCIBYPASS interface class. The following conditions apply to HFP devices:

Currently, Windows assumes there's only one Bluetooth host controller. Additionally, the Hands-Free Profile (HFP) synchronous connection-oriented (SCO) bypass support assumes there's only one bypass connection, and any channel opened through the HFP device driver interface is associated with that single connection.

Audio drivers should arbitrate this channel and the single bypass connection for a single consumer on a first-come, first-serve basis. The simplest way to achieve this is for the driver to allow only a single filter to transition its pins to the ACQUIRE state.

I have a brand new Schenker CORE 14 Laptop with a built in AX201 card. I want to pair a Jabra Talk 55 Headset with speaker and microphone, but only the speakers are connected (it only says "Musik verbunden" on my german windows).

I did another test with a ASUS BT500 USB-Bluetooth stick, and when I connect there, the Speaker and the microphone are recognized correctly. So I think it must be something with the Intel AX201 drivers.

After you pair and connect the headset, please open Settings and enter sound in the Find a setting box. Select the "Choose your sound input device". There should be an Input area that lists input devices. Are you able to select the headset from this list?

If you still do not see the headset as an input device, try using the Windows Bluetooth & other devices area in Settings to remove the headset, and then retry pairing the device, and repeat the above.

I have two Bluetooth audio devices, and multiple Bluetooth pairing capable devices. I have a JBL soundbar and Bose QC35II headset. Both my Windows PCs have 20H2 and the latest cumulative update, so they are essentially running the same build. But they have different network adapters. I connected the Bose QC35II to a desktop that has the AX200 adapter with the latest Intel drivers. I get two devices listed in both the Bluetooth section, and the Sound, video and game controllers section. One is for Stereo, and the other is Hands-Free AG Audio. The JBL soundbar only lists Stereo in the Sound, video and game controllers section. In the Bluetooth section there is a Bose QC35II and Bose QC35II Avrcp Transport. The JBL has the same two in the Bluetooth section. I can say the sound quality on the Bose is close to what you would expect for a Bluetooth stereo headset. Definitely not a low level / low quality sound. On the laptop I see the same devices and the sound plays the same.

Have you checked the manufacturer's website to see if there is a firmware update for your Bluetooth device? I know the Bose could pair with an Android phone but could not pair with Windows until I applied a firmware update from Bose. It is possible your headset needs a firmware update to resolve this issue.

One last thing that might be work, but do this at your own risk. If nothing else seems to resolve the issue, I would disconnect the device using Settings / Devices. I would then use Device Manager and remove the device from the Bluetooth and Sound, video and game controllers. Then you can try pairing and see if this is resolved.

2. This is a much more interesting one: I disabled the internal AX201 Bluetooth adapter and plugged in a ASUS BT500 (it has realtek chip). After a reboot I paired the Jabra55 Headset. And there everything worked as expected. I have two sound-devices and one microphone. So the only difference is now the bluetooth adapter and there the intel AX201 isn't working correct.

I did find another place for more information about the device. The new Windows-settings/devices just show limited infos; but if you follow the link to the old ControlPanel/Hardware&Sound/Devices&Printers you can right-click on the Jabra55 and see more properties. The Services-tab seems to show the profiles; although I do not understand the translations. But it is the same for BT500 and AX201. If you look at the hardware-Tab then things are different. See the attached screenshots. When paring with the BT500, you can see two additional "Hands-Free AG Audio Device" one with a loudspeaker icon, and one with a headset icon. But you see the "Hands-Free AG"-Systemdevice on both. So somehow the Handsfree-Profile was detected with the AX201, but the configuration in Windows is incorrect. 152ee80cbc

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