NoMachine blocks VirtualBox USB

[Anonymous]

Hi,

some environment information:
Host-OS: Windows 10 Enterprise 2015 LTSB 64 Bit
NoMachine: 5.0.47_1
VirtualBox: 5.0.8
Guest-OS: does not matter

When trying to connect an USB device to a virtual guest machine (OS independent) with NoMachine server running on the host system, it is not possible to access the USB device on the virtual machine. VirtualBox tries to connect it, because the device is not shown on Windows anymore, but it does not appear on the guest system.

If I uninstall NoMachine, everything runs fine.

Regards,
Patrick

[Peter76]

Hi,

thanks for reporting. We’re investigating and will update the post once we have some feedback on the issue.

[Peter76]

Hi,

referring to the last post, we can confirm that the problem occurs. This problem is caused by the USB driver that uses NoMachine and VirtualBox. We are currently working on a solution.

Until then, we suggest you uninstall the USB drivers without having to remove NoMachine:

1) Run the CMD console with administrator rights:

right click on the bottom left corner on Windows Desktop -> choose Command Prompt (Admin)

2) Move to <NoMachine>/bin directory

where <NoMachine> is the directory where you installed the NoMachine software

4) Remove USB drivers and devices by executing from console:

nxservice64 –uninstall nxusb

or, if you are on a 32.bit machine:

nxservice32 –uninstall nxusb

5) USB service will be in ‘Marked to delete’ status until next reboot.

nxservice64 –status nxusb

6) change entry in node.cfg (than after reboot the Windows driver will not be loaded):

run the Notepad (or other text editor) as administrator

open file <NoMachine>/etc/node.cfg

change entry
#EnableUSBSharing both
to
EnableUSBSharing none

7) Reboot the Windows.

If you want to check status of USB service, you can run from console:

nxservice64 –status nxusb

it should be: Not installed

[Anonymous]

Hi,

this workaround works great. Thank you.

Regards

[Britgirl]

In the meantime we have also notified Oracle. It appears to be something that may well need to be fixed on their side. Of course, if there is a fix that we can implement, we will post any info here.

[Author]

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