virtualbox.org

Hi,

Host OS: Windows 10 Pro 2004 (OS Build 19041.450)
Guest OS: Windows 10 Pro 1709 (OS Build 16299.904)

Please note that I am unable to upgrade/change the Guest OS version due to testing purposes.

I have an external USB hard disk that connects to my Win10 2004 laptop. The drive shows up as the E: drive in File Explorer. I then fire up VirtualBox (launched as admin) and then I have it -- through the Devices -> USB menu -- have the guest capture the USB disk. So the drive disappears from my host machine's file explorer and then appears in the VM as drive F:. All well and good -- this is the desired behavior.

When I click Start -> Shut Down in the Guest, the machine shuts down. The expected behavior is, after a while, for the drive to show up on the File Explorer -> This PC menu again as Drive E:. It takes a few seconds for this to happen. However, it never happens. Instead, the port's power appears to be shut down, and the drive will not be detected if I unplug the USB cable and then re-plug it. I think that this is because the power to the port has been shut off.

I've disabled the Win10 2004 new feature to suspend USB ports when not in use. I think that Win10 2004 thinks that this is what happens when the VirtualBox VM is shut down. I've also tried going into Device manager -> USB Root Hub -> Power management tab of Properties -> unchecking "Allow Windows to manage power" check box and restarting. Still the same behavior happens.
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This behavior was not observed with Win10 1909 update, before I updated the computer to 2004. So I think it's some new 2004 feature.

You have a lot of logs there. It would help us if you could pare that down to one log showing the behavior.

But first, go through USB basics and troubleshooting. If steps 1 through 7 cannot get your device working properly, please provide the troubleshooting command outputs in step 8, as text in

I have the exact same issue, in my case I think it might have been triggered by a recent update to 2004, perhaps KB4579311? Has anyone figured this out? Thx!

I stumbled on a work-around. My laptop has a usb-c port, if I connect a 'usb-c to 4 port usb 3.0 hub' and plug the drives into those ports it works fine. This issue only occurs when I plug the drives directly into either of the two usb-3 ports contained in the laptop.

fablege, it is hoped that when folks feel they need to add to someone else's topic they have read and applied the information in the topic first.

Regrettably we can't do anything with your information until you do the above.