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Re: USB device is busy with a previous request

Posted: 30. Nov 2009, 23:32
by bighammy
Thanks to everyone for these tips. I am new to VirtualBox and was having issues getting a couple of different USB devices to attach. Both were failing because they were busy. This was especially confusing since there were no drivers for the host OS for one of the devices. The filters were created within the USB settings tab based on existing devices (VirtualBox did see both devices). Two things were required to fix the problems:
1) the filters created by device had to be generalized (data taken out)
2) the EHCI option in the USB settings tab had to be deselected
#1 was required by both devices while #2 was only required for the scanner (as mentioned earlier in this thread).

Re: USB device is busy with a previous request

Posted: 4. Dec 2009, 00:41
by grenadeguy187
Actually, the problem is MUCH simpler than that. Simply do a "Safely Remove Hardware" on the host, and vala!

Re: USB device is busy with a previous request

Posted: 29. Dec 2009, 19:05
by djdavedoc
Hi Guys, Sorry to bring this back up but I have a really annoying issue along the same lines as this.

Host OS Windows 7
Guest OS Windows XP SP3

I have setup USB and Virtual Box picks up my device. I have tried with filters on and off and it says "Busy with previous request" Rebooted both machines, turned off EHCI Mode, deleted Data in Filters and it still wont work.

Oddly even with the device Disconnected from my machine it will still say "Busy with previous request" I am all out of ideas and cannot get my WD Passport Drive to work with my Virtual Machine. I have also Ejected the drive from the Host machine and tried again with the Guest but it still wont work.

I have the latest version of VirtualBox and also the Additions. Can anyone help as im gettind fed up with this as it makes no sense to me at all.

Edit: Just tried my Flip Video HD Camcorder.... SAME problem... Why is this happening? What have I done wrong?

Re: USB device is busy with a previous request

Posted: 12. Dec 2010, 08:32
by vv75
let's face it, guys, vbox's usb support is pure lottery.
on my workstation it works flawlessly, while on the server all i get is "busy with the previous request" no matter how i dance around it.
tried everything - disabling ehci, pushing "remove hardware" on the host, etc - nothing helps.
one year passed since this topic was started and vbox got NO improvements over this whatsoever.

Re: USB device is busy with a previous request

Posted: 13. Dec 2010, 18:56
by nipipapa
I am new to VM VirtualBox. and I am having the same problem. Don't feel too comfy going into Bios and making changes (Since these are work PC's).. Oh well, I guess I will have to transfer what I want to my host's hard drive...
not cool

Re: USB device is busy with a previous request

Posted: 7. Jan 2011, 22:58
by saurabhg9
I had a similar problem for my USB scanner.

This is what finally worked (after doing lots of tinkering around)

The key is to modify the USB settings of the VM as follows (also check screenshot below) -

1) In the USB settings, remove the checkmark against the "Enable USB 2.0 (EHCI) Controller" property.
2) Also then add a USB filter to the VM and set the "Remote" property to "Any".

After this scanning will work through the VM. Just make sure that you first start the VM and then connect the printer to the host.

All the best !
/Saurabh

Re: USB device is busy with a previous request

Posted: 1. Mar 2011, 15:30
by jumpjack
The Final Solution is here: :D
http://forums.virtualbox.org/viewtopic.php?f=6&t=29034

Kill VBoxSvc.exe in host machine, it's its fault if the USB devices remain stuck!

Re: USB device is busy with a previous request

Posted: 6. Oct 2011, 18:18
by adamberkey
For me, I noticed that this message box was coming from the host's OS, and so I thought maybe Virtualbox was the problem. I just created a new VM, used the same HD image from the previous one, and everything resumed as normal.


-Adam

I was using a pen drive normally. After a crash all I get is:

Code: Select all Expand view
Failed to attach the USB device to the virtual machine Fedora 11. USB device is busy with a previous request

It looks like a lock was left somewhere but I can't find it. Reinstalled guest additions and read many pages on the web.

Any ideas?

Re: USB device is busy with a previous request

Posted: 19. May 2013, 20:59
by Matt0987
Mr Incredible wrote:
abhay wrote:I was facing this problem since very long now but I solved it today so wanted to share the solution here.
What I did was to just disable USB 2.0 (EHCI) support in BIOS and then everything works...NO PROBLEMS at all!!!
I don't know why Virtualbox can't handle USB 2.0 but at least my scanner works now :D
That worked for me too. What Host are you running? Mine is Windows 7 64 Bit Ultimate RTM 7100

Do you disable the USB 2.0 (EHCI) in the Host BIOS? Or, VB?

Re: USB device is busy with a previous request

Posted: 19. May 2013, 21:53
by noteirak
Last reply was 06 Oct 2011, 17:18.
Time to lock this post...