Bluetooth Headset not working with teams.

I had the same issue and fixed it.

However, before going forward be aware that I think this is a limitation of how Bluetooth audio works on Windows. My understanding is that the "headset" option provides lower audio quality to free up bandwidth for the microphone data. The "stereo" option uses higher quality audio, but as a result the microphone can't be used. If you want to use the stereo option, you need a microphone separate from your headset. Again, this is just my limited understanding of how it works.

Teams seems to handle the switchover between the two... inelegantly. If you want to force Teams to use the stereo option and a separate microphone, this worked for me:

1. With your headset connected, hit the start menu, type "control panel" and open it.
2. Click sound
3. Under the playback tab, find the stereo version of your headset. If it's disabled, right click, enable. Right click it, and select "set as default communications device". Do this again for "set as default device". 
4. Find the "headset" version of your device, and right click -> disable.
5. Go to the recording tab, and find the microphone you want to use. Right click it, make sure it's enabled, and select "set as default communications device". Do this again for "set as default device". 
6. Under the same tab, disable the headset.

If you do all of these things, the headset shouldn't show up in Teams and audio should be successfully sent to the stereo version of the headphones. I found that if I didn't set the default devices correctly, it would still be trying to read the microphone data from the headset even when I had selected an external microphone in Teams. This then disabled the stereo option - resulting in no sound.

Thank you for your response.  I will try the advised steps.

However, I am having problems with the Teams application when  I use "call my phone" and use my cellphone with bluetooth linked to that phone.  This is the only use of this BT headset that has run into this problem (i.e. the BT connected to my phone and my phone calling into Teams or being called from Teams.

I had the same issue and fixed it.

However, before going forward be aware that I think this is a limitation of how Bluetooth audio works on Windows. My understanding is that the "headset" option provides lower audio quality to free up bandwidth for the microphone data. The "stereo" option uses higher quality audio, but as a result the microphone can't be used. If you want to use the stereo option, you need a microphone separate from your headset. Again, this is just my limited understanding of how it works.

Teams seems to handle the switchover between the two... inelegantly. If you want to force Teams to use the stereo option and a separate microphone, this worked for me:

1. With your headset connected, hit the start menu, type "control panel" and open it.
2. Click sound
3. Under the playback tab, find the stereo version of your headset. If it's disabled, right click, enable. Right click it, and select "set as default communications device". Do this again for "set as default device". 
4. Find the "headset" version of your device, and right click -> disable.
5. Go to the recording tab, and find the microphone you want to use. Right click it, make sure it's enabled, and select "set as default communications device". Do this again for "set as default device". 
6. Under the same tab, disable the headset.

If you do all of these things, the headset shouldn't show up in Teams and audio should be successfully sent to the stereo version of the headphones. I found that if I didn't set the default devices correctly, it would still be trying to read the microphone data from the headset even when I had selected an external microphone in Teams. This then disabled the stereo option - resulting in no sound.

MS>>> All of this is TOO STUPID to contemplate... It should just WORK!

I have found many games cut out when using bluetooth headphones

so much for trying to have a quiet session of Halo

There is no Headset option in Recording and it's normal by design. 

Headset is defined to use speakers and micro options

Headphone is focused on listening music, etc