virtualbox.org

Hello!

Host: Windows 10 ver. 2004.
Guest: Windows 10 ver. 1909.
Virtual Box ver. 6.1.12 r139181 (Qt5.6.2)

(The problem existed before the difference between windows 10 versions.)

Bluetooth was not working properly in the Guest Machine so decided to remove the filter to be able to use it in the Host Machine, now turns out neither Guest nor Host machines can use Bluetooth.

If I run the Bluetooth troubleshooter in both machines I receive the message saying that there is no Bluetooth.

My first thought was:

I don't remember the exact settings of the Bluetooth Filter, just it was "Intel 100 (...)", does manually readding the parameters could potentially give me access to Bluetooth in the Guest Machine again so I can remove it and re-add it properly?

Apparently no (even that I couldn't confirm if the parameters were right as when it was working), see above.

Bluetooth was showing as "hidden" in the Guest Machine Device Manager, I downloaded the USBDeview, found Intel Bluetooth parameters, created a new filter in the settings and tried to reboot both machines to see If it would give me access to the Bluetooth in the Guest Machine, it didn't work, so I removed it in both Device Manager and USBDeview in the Guest Machine.

The Bluetooth filter is not shown in the "USB Filter Devices".

I already tried to update drivers in both Guest and Host machines, it didn't work.

Does clearing CMOS could help with it by any chance?

If possible please, tell me If I should provide any other information or log.

Thank you for your help and attention.

I'm sorry for any inconvenience.

Not a guest OS question. Topic moved to "Windows Hosts".

VirtualBox is a piece of software, it has no magical powers. In particular, if VirtualBox is not running then it cannot prevent the host from using BlueTooth, so if that is your scenario then please dismiss VirtualBox from your thinking. Consider what else might have failed or changed in your environment.

I say again, VirtualBox is software. The fact that it simulates hardware for a guest doesn't mean it has any special access to host hardware, and talking about clearing host CMOS makes no sense at all.

mpack wrote:Not a guest OS question. Topic moved to "Windows Hosts".

I'm sorry for posting in the wrong section, thank you for moving it to the right place.

mpack wrote:VirtualBox is a piece of software, it has no magical powers. In particular, if VirtualBox is not running then it cannot prevent the host from using BlueTooth, so if that is your scenario then please dismiss VirtualBox from your thinking. Consider what else might have failed or changed in your environment.

I say again, VirtualBox is software. The fact that it simulates hardware for a guest doesn't mean it has any special access to host hardware, and talking about clearing host CMOS makes no sense at all.

I understand and It makes no sense to me as well.

The problem is when the Virtual Box was on and even the Bluetooth was shown as hidden in the Device Manager (and I couldn't add any device through Windows settings) I could still detect the Guest Machine by searching the devices near me when using my phone.

I suspect that when I disabled the Bluetooth through the Host Machine the Bluetooth was still connected somehow to the Guest Machine (in USB passthrough filters) and (I don't know how It is possible or If It's possible) but there might be something still connecting the Bluetooth from the Host to the Guest Machines.

Is there any way so I can share a log to see If I can find anything related to that?

I already searched the Bluetooth keyword in the logs but couldn't find anything.

Only thing I could suggest is to go through the troubleshooting steps in step 8 of USB basics and troubleshooting and provide all the data it asks for. We might be able to pin down if there is still something that could have been left behind.