To load back kernel extensions, perform the reverse operation on Terminal, starting by last one There may be other kernel extensions to unload.Finally, on VirtualBox, select Bluetooth USB and check everything runs fine.To unload them and free the Bluetooth port, on Terminal type firstįor super-user privileges and them unload the kernel extensions.When trying to use Bluetooth on the guest, the error message says it is already in use.Īnd see the result: most are kernel extensions (kext) On MacBook host, launch Terminal from Application > Utilities.On MacBook host, desactivate Bluetooth on Apple > Preferences > Bluetooth.Here's a step-by-step procedure that works fine for me: Therefore, main assumption is I don't require Bluetooth on the host. The hereafter post concerns my configuration: Windows XP guest on MacBook host.Īs other USB devices, the Bluetooth port can't be used at the same time by the guest and the host. After much searching, compiling and testing, here's a temporary solution.