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Audio Technology

Fixing Bluetooth problem with TP-Link UB400

I recently bought myself some Sony Bluetooth earbuds for my phone, but I was keen to see if I could connect them to my PC too – so that I could use them in conference calls, for example.

But my computer didn’t have Bluetooth. So I bought TP-Link UB400 Bluetooth Adaptor online, because I’ve used and liked their stuff before. But when I plugged it in it didn’t work! Windows 10 kept telling me I didn’t have Bluetooth installed.

I went to the TP-Link FAQ for the UB400 – but nothing they suggested worked.

After a bit of Googling, I went to the Windows Device Manager, looked at the Universal Serial Bus controllers, and disappeared down a rabbit hole trying to fix the “Unknown USB Device (Device Descriptor Request Failed)” problem.

And only then did I go to the “CSR Bluecore Bluetooth” driver that also appeared on the list of Universal Serial Bus controllers when I plugged in the dongle. As an experiment:

  1. I right-clicked “CSR Bluecore Bluetooth and selected “Update driver”
  2. Clicked on “Browse my computer for driver software”
  3. Clicked on “Let me pick from a list of available drivers on my computer”
  4. Picked “Generic Bluetooth Adaptor” in place of “CSR Bluecore Bluetooth”
  5. Clicked “next”

and suddenly everything worked!

So that’s my solution! I hope it works for you too.