[WorksForMe] Bluetooth not working Mac OS X Host, Ubuntu 16.04 or Win 10 Pro Guests

[venky321]

I am using audio on built-in Bluetooth on my OS X host, works fine. However, both Ubuntu 16.04 and Win 10 Pro guests are not able find Bluetooth adapter / device

OS X host details:
macOS High Sierra 10.13.4
Macbook Pro

VirtualBox Version 5.2.10 r122088 (Qt5.6.3) with Extension Pack
Guest Additions installed on both Ubuntu and Win 10 guests

Could someone help me with this?

[socratis]

Have the Bluetooth adapter plugged in when you perform the following steps to grab a complete VBox.log, from a complete VM run:

• Gathering the necessary information:
  1. Start the VM from cold-boot (not from a paused or saved state).
  2. Observe the error, i.e. go to the System Preferences » Sound and see what shows as available audio inputs/outputs. Also, post the output from the guest's Terminal of the command "aplay -l".
  3. Shutdown the VM (force close it if you have to).
• With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
• Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

[venky321]

Thank you for responding to my post. The problem is solved, my mistake.
I was looking for a separate bluetooth adapter in my guest OS, but since I am using built-in bluetooth audio on my MacBook Pro (and not a separate USB adapter), VB audio is pass-through.
Everything is working fine, I am able to hear and also record audio.

[socratis]

since I am using built-in bluetooth audio on my MacBook Pro

<nitpicking>
Macs don't have built-in Bluetooth audio, they have a built-in Bluetooth adapter, which can also be used for audio, among other things. The Bluetooth audio "device" that you have connected should appear as another audio in/out device on your Sound preferences. Just like any other audio device, be it USB or HDMI.
</nitpicking>

and not a separate USB adapter

FYI, the Bluetooth *is* a USB device, it runs from the USB bus. It's just another category of USB devices. One that can be used to expand the capabilities of your Mac.

Glad you got it going. Marking as [WorksForMe].