Ticket #11251 (new defect)

Opened 3 years ago

Last modified 3 months ago

USB not working at all (all devices are busy)

Reported by: Karagul Owned by:
Priority: critical Component: USB
Version: VirtualBox 4.2.4 Keywords:
Cc: Guest type: all
Host type: Windows


USB devices in drop-down list are ALL in "busy" state. If I try to attach one (a USB 232 converter in this example) I get the following error:

Failed to attach the USB device Prolific Technology Inc. USB-Serial Controller [0300] to the virtual machine WinXP Devel.

USB device 'Prolific Technology Inc. USB-Serial Controller' with UUID {1e04c48b-fcb2-4509-bfba-8ea06084b6be} is busy with a previous request. Please try again later.

Result Code: E_INVALIDARG (0x80070057)
Component: HostUSBDevice
Interface: IHostUSBDevice {173b4b44-d268-4334-a00d-b6521c9a740a}
Callee: IConsole {db7ab4ca-2a3f-4183-9243-c1208da92392}

Sometimes, instead, the device becomes "captured" but nothing happens (device is NOT attached) and retrying to attach it yields the same error as above.

This does NOT seem to happen on linux host. Log is attached.


vboxlog.txt Download (102.2 KB) - added by Karagul 3 years ago.
VBox.log.1 Download (111.0 KB) - added by user32767 3 years ago. Download (54.6 KB) - added by stickybit 2 months ago.
logfiles from stickybit

Change History

Changed 3 years ago by Karagul

comment:1 Changed 3 years ago by user32767

I have the same issue with USB in virtualbox 4.2.6, host OS is Windows 8 64, guest OS is Windows XP Pro 32 bit. Trying to attach any USB device does not bring any visible results, and futher efforts to do this cause an error message telling that device is busy, for example: "USB device 'JetFlash Mass Storage Device' with UUID {0bfa92ef-936c-4558-ab6a-5e04b2bf3777} is busy with a previous request. Please try again later." I have got this problem only on Windows 8 host, I have never seen it in other host OS, such as Windows XP, Windows 7, Ubuntu 12.04, Ubuntu 12.10. Waiting with hope for solution of this problem.

Version 0, edited 3 years ago by user32767 (next)

Changed 3 years ago by user32767

comment:2 Changed 3 years ago by fergomez74

Similar problem with Macbook pro running Mac Os 10.8.2 and VB 426 with windows 7 or windows 8 on the top of it. Any USb device is not launched and a driver problem is reported. Really a big problem for me,

comment:3 Changed 3 years ago by antip

The same issue in VirtualBox-4.2.10-84105-Win, Host - Windows 8 Single Language 6.2.9200.16496 (Win8 RTM), Guest OS is any of: winxpsp3 prof ru (ver.5.1.2600)/win7 x32 prof ru(ver.6.1.7600). Any USB device is busy "with a previous request". Please send any information on the solution of this problem.

comment:4 Changed 3 years ago by svolpe

I believe this is the USB 3.0 host only bug described here:

comment:5 Changed 2 years ago by Wayne Zhang

USB function has broken again since 4.2.18 (include), all 4.3 releases doesn't work on some Windows 7 64bit machines. See thread:

comment:6 Changed 2 years ago by Der_Clown

I also have this problem.

comment:7 Changed 22 months ago by abyzl

Not being able to pass through USB devices to guest VM's due to 'device is busy' error has been around for quite some time now. It still seems evident in version 4.3.12.

Nearly 2 years and no resolution to the issue. Since no correspondence from development I would suggest a workaround: use another product.

comment:8 Changed 22 months ago by wbmccarty

I think this is right context and set of symptoms to match my own experience. Host is WIndows 7 x86_64, Guest is Fedora 20. VB 4.3.x won't mount my HTC phone via USB, complaining of being busy. Reverting to 4.2.16 ~Resolves The Problem~. However, my kernel is then too recent for 4.2.16 so that version of VB doesn't want to support shared folders. Rather than downgrade the kernel I un-reverted (?) to the most recent VB 4.3. Once again, no USB.

Is there anything I might submit that would be of help? It seems to me that I've got a "critical case" potentially useful to root cause analysis.

BTW, my USB is 2.x, not 3.x. At the moment, I'm plugged into a slow 2.x port and Windows is trying to teach me to do otherwise.

comment:9 Changed 19 months ago by Boochip

I have this problem also. Win7 64bit,asus m4a87td evo. 22 months ongoing and official word is it's working fine for us. looks like 4.2.16 is where i stay.

comment:10 Changed 19 months ago by Wayne Z

Hi wbmccarty and boochip,

A workaround to this issue is to use the latest VB, for example, 4.3.16, with 4.2.16 USB Windows drivers, see thread:


Last edited 19 months ago by Wayne Z (previous) (diff)

comment:11 Changed 3 months ago by TimOr

Ticket 14287 and this ticket 11251 look similar. Solution from also worked for me for VB 5.0.14. Except it's not explained what exactly it does, and whose bug is it.

Last edited 3 months ago by TimOr (previous) (diff)

comment:12 Changed 3 months ago by stickybit

The problem is still persistent. Also in the newest version (5.0.14). This issue is very evil for many people and needs to be fixed as soon as possible. :/

The solution in the prepost is not working!

Debug infos like screenshots and logfiles can be found at my post here:

Last edited 2 months ago by stickybit (previous) (diff)

Changed 2 months ago by stickybit

logfiles from stickybit

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