Continued Bluetooth LE & Teams Issues with Surface Earbuds

See my note on the other thread. When using the Stereo connection you actually aren't using the Earbuds mic, it's the PC + you lose all of the M365 integration over that channel.

I had the same issue on my first-gen Surface Laptop and found a solution. I did a factory reset AND uninstalled the Windows "Surface Audio" app. It struck me as odd that, after installing the Surface Audio app, it does some kind of additional bluetooth connection (BLE vs normal? I don't know). Turns out that additional connection was causing the issue. 

You can still install the app on your iOS or Android device to manage or update the Earbuds.

Hope it helps.

I've had similar issues with the Bluetooth Surface mouse as well. Will go out randomly when trying to use the Earbuds while connected to my PC. Experience this across multiple Surface hardware devices (Go + Book2). 

The HF AG connection continues to be atrocious. The sound quality with Stereo is infinitely better but pales in comparison to when paired with an Android or iOS mobile device.

I agree, got the surface book 3, after a week, got the surface buds, was using teams, what a disaster.  Using surface hands free ag, had to hang up, couldn't take the noise, couldn't hear anyone without loud noise crackling.  Stereo sounds fine, little underwhelming, but the teams experience with these surface buds are a disaster.  Also have a surface fingerprint keyboard, and when using the surface buds, the keyboard will lose connection.  Next, when using the surface precision mouse, it slows down, have to turn it off, then on again, comes back.  These surface buds are screwing with the Bluetooth on the newest of the surface devices.  Incredible.  Have the 1st generation of the surface headphones, never had a problem with the surface book two.  Tried them with the surface 3, seem fine, but wanted to try the buds.  Please help Microsoft.  Oh, and the genius that decided to only let one device connect to the surface audio buds at one time should be disciplined.  Brilliant, could have let us know....should be a warning on the Microsoft store website warning anyone that uses multiple devices, please beware.  Connect to your phone, or choose the computer, but you can't have both without disconnecting one of the.  Displeased....

I have the same problem (Surface Pro 6 with Windows 10 Build 1909):

With the audio playback device Surface Earbuds Hans-Free AG Audio connected via Bluetooth LE i constantly hear disturbing noises only on the left headphone. No matter in which application (Microsoft Teams, Spotify, YouTube, ..)

If I connect the Earbuds with a Smartphone or iPad, I don't have this phenomenon with the noise! Updates, resetting to factory settings, reconnecting, everything does not help. How can that be? It works with Samsung and Apple-Devices but not with the Microsoft Surface? Are you kidding me?

But the following is interesting: As soon as I switch to the second audio playback device (Surface Earbuds Stereo) in Windows 10, the sound is good without disturbing noises. But, this device only works as a stereo playback device without a microphone. In the sound settings of the corresponding headphones you can see: 2 channel mode, 16Bit and 44100Hz.

In Microsoft teams I can set Surface Earbuds Hans-Free AG Audio as audio device in the device settings. This is how the microphone works, but the sound sounds awful with disturbing noises. Another setting does not work with the Earbuds.OMG.

I also noticed that in Control Panel > Sound the following is set for this audio device: 1 channel, 16Bits and 16000Hz. What also surprises me is the relatively old Bluetooth driver in Windows 10:

driver name: microsoft_bluetooth_hfp.inf

Class GUID: {4d36e96c-e325-11ce-bfc1-08002be10318}

Driver date: 03/18/2019

driver version: 10.0.18362.1

Driver provider: Microsoft

Driver section: Common_BthHfAud_Install

Driver rank: 0xFF0000

Suitable device ID: BTHHFENUM\BthHFPAudio

Common Microsoft, you should fix that issue very soon.