Windows 10 Bluetooth all of sudden sees my headphones as an unknown device

Solution 1:

I would start with the following troubleshooting steps:

1. Go to Settings->Devices->Bluetooth and Other devices menu and remove your headphones from your computer.
   2. This may be enough to fix your problem, if nothing appears in device manager skip to step 6.
2. Press WIN+X key and select device manager
3. Goto Bluetooth Devices and right click the Bluetooth headphones device name if it appears, and select Uninstall Devic
   1. If it asks to uninstall the driver from you computer, select that too although that's unlikely since it's probably a built-in driver
4. Go down to Sound, Video, and Game Controllers and select the Corresponding audio devices and uninstall them too if they appear.
5. Restart your computer
6. If your headphones remember connected devices, read it's manual to figure out how to clear all paired devices.
7. You should know be starting "Fresh". Go ahead and try to re-pair your headphones. If it still appears as Unknown, wait a bit to see if will eventually load in. Bluetooth can be a bit finicky sometimes.

If your still having problems, I would try to update your Bluetooth drivers or see if a recent update broke it.