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How to fix microsoft A2dp source giving code 10 ?

Vilius B 0 Reputation points
2025-08-25T22:50:45+00:00

Hey everyone. I want to get audio using stereo instead of hands-free. The option does appear in the sound tab under Playback, but its grayed out and I can't enable it since trying to enable it does nothing and if I disable the hands-free option it still doesn't work and then my headphone do not appear in the playback section at all. Also, in the device manager Microsoft Bluetooth A2dp Source cannot run and gives the code 10. I have spent 3 hours doing different solutions from unpairing the device, putting my tp-link UB400 adapter into different slots all the way to uninstalling the drivers, installing the latest updates, running cmd scans, troubleshooting etc. I would really appreciate some help. ( For context i am on windows 10, i have a tp-link UB400 adapter, the device I am trying to connect are jbl tune510bt headphoes)

Windows for home | Windows 10 | Apps
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  1. Emmanuel Santana 24,230 Reputation points Independent Advisor
    2025-08-26T02:22:45.8766667+00:00

    Hello. Can you check in Device Manager if your TP-Link adapter shows up as “Generic USB Bluetooth Adapter” or with the TP-Link name?

    In the meantime, try these steps:

    1. Open Device Manager, expand “Bluetooth,” right-click “Microsoft Bluetooth LE Enumerator” and choose Disable.
    2. Still in Device Manager, find the “Microsoft Bluetooth A2dp Source,” right-click > Update Driver > Browse > Let me pick, and select “Bluetooth Stereo (A2DP Source).”
    3. Go to Control Panel > Power Options > “Choose what the power buttons do” and uncheck “Turn on fast startup,” then reboot and re-pair your headphones.

    Disabling the LE Enumerator prevents Windows from forcing the low-energy profile, manually picking A2DP forces the stereo driver, and turning off Fast Startup clears any cached mis-binding so Windows starts fresh.

    Let me know what driver name shows up for the dongle and if the stereo device appears after these steps.

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