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All bluetooth headset mic is not working with Window 11

Timothy Liew 140 Reputation points
2025-10-14T00:19:06.91+00:00

mic is not working for all bluetooth headset. The bluetooth show connected with both sound and mic, but there are none of Window program can access the mic function. FYI, before the Window Updates, everything is fine.

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  1. Brendan Baker 5 Reputation points
    2025-10-29T14:14:56.6733333+00:00

    I have the ThinkPad T14s Gen 6, and I am experiencing the same Bluetooth headset issue. The problem didn't start until I updated to Windows 11 Version 10.0.26200 Build 26200 (October CU update); I suspect KB5066835 is the culprit.

    Issue Description: Bluetooth headsets connect successfully and work for media playback (videos, music, system sounds). However, when applications attempt to use the headset in communication mode (with microphone), both audio output and microphone input fail completely.

    Impact: This affects all communication applications including Zoom, Teams, 3CX, and others. The headset appears connected in Windows settings, but apps cannot utilize it for two-way communication.

    System Details:

    • Device: ThinkPad T14s Gen 6
    • OS: Windows 11 Version 10.0.26200 Build 26200
    • Suspected Update: KB5066835
    • Symptom onset: Immediately after October CU update

    This is a critical issue that effectively removes the ability to use Bluetooth headsets for calls and meetings on affected systems. This needs to be addressed urgently.

    1 person found this answer helpful.
  2. Jeff 5 Reputation points
    2025-10-31T15:31:29.2566667+00:00

    We had success with this preview KB in our organisation : KB5067036

    1 person found this answer helpful.
  3. HRob 81 Reputation points
    2025-11-02T21:40:24.59+00:00
    1 person found this answer helpful.
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  4. Stephen Pettifer 30 Reputation points
    2025-11-13T08:53:05.48+00:00

    November patch update seems to have fixed it for me so far with Pixel buds 2a (only ones I have to hand), it's just absurd we have to wait a month when MS break such important functionality

    1 person found this answer helpful.
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  5. Peter 15 Reputation points
    2025-12-01T04:38:15.65+00:00

    No bluetooth audio devices work with Lenovo Thinkpad P14s Gen 5 AMD in Windows 11 Pro 25H2. This is not a hardware problem because bluetooth audio works when booting from an Ubuntu Live USB. The problem appears in a recent Windows update. I have tried a Bose SoundLink Flex 2 bluetooth speaker, Nothing Ear 3 bluetooth earbuds, and Google Pixel earbuds.

    Both KB5068861 (26200.7171) and KB5068861 (26100.7171) are installed.

    audiosrv.dll file version is 10.0.26100.7019.

    In Control Panel - Sound - [any Bluetooth device] - Properties - Advanced tab, clicking "Test" opens an "Error!" popup window with message "Failed to play test tone." The only audio format listed is "2 channel, 16 bit, 48000 Hz". This applies to all audio bluetooth devices.

    Bluetooth hardware is "Qualcomm FastConnect 6900 Bluetooth Adapter" with driver version 2.0.0.1292.

    1 person found this answer helpful.

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