SOLVED: Failed to access the USB subsystem on Windows 7 host

[ElQuia]

" I think it just sits there monitoring removable insertion and pop us a request when that happens... "

BTW if you think about it, it IS a VERY use full feature for standard pc users who use pen drives everywhere and carry them around FULL of bugs of all kinds...

[misha]

@ElQuia: I got the tpdevflt driver loaded, however I'm unable to repro a hang with it, i.e. everything working normally here. I wonder if it is some specific USB device being captured that is causing troubles. It would be great if you could install a test build (you had problems with), remove all USB filters in VM settings, start VM and try to dynamically capture each device individually to determine which one of those is causing troubles.
You can dynamically attach/detach a device by right-clicking the "USB" icon in the bottom right part of a VM window while VM is running and selecting the device.

[ElQuia]

@ElQuia: I got the tpdevflt driver loaded, however I'm unable to repro a hang with it, i.e. everything working normally here. I wonder if it is some specific USB device being captured that is causing troubles. It would be great if you could install a test build (you had problems with), remove all USB filters in VM settings, start VM and try to dynamically capture each device individually to determine which one of those is causing troubles.
You can dynamically attach/detach a device by right-clicking the "USB" icon in the bottom right part of a VM window while VM is running and selecting the device.

Lets see if I get all the procedure ok:
1- Disable USB filters in settings for the VM (uncheck USB support on the usb settings page)
2- Start a vm (XP it always hangs with any little bug, long live bill)

Forget it. On starting XP VM I get the error as shown in attachements (screen capture 1 & 2). At the moment my usb web cam was active and I had a kingston pen drive inserted- With out ANY usb device = same error. VBox version is 4.1.2

Capture.JPG (74.36 KiB) Viewed 6583 times

Capture2.JPG (28.13 KiB) Viewed 6582 times

IDEAS?

[Perryg]

1- Disable USB filters in settings for the VM (uncheck USB support on the usb settings page)

I don't think misha meant for you to disable the USB/USB2 support. Only to make sure that no filters are created. If there are filters delete them.
Then once the guest is running to select the devices one at a time by clicking the USB icon and clicking on the device that you want to use in the guest and see which one/s fail/s.

[misha]

Forget it. On starting XP VM I get the error as shown in attachements (screen capture 1 & 2). At the moment my usb web cam was active and I had a kingston pen drive inserted- With out ANY usb device = same error. VBox version is 4.1.2

As I said in my prev post, you need to install the test build I posted here (that hang the host for you).
You only need to remove or disable all usb device filters as Perryg mentioned, (you mentioned you have "an empty filter (a.k.a. "New Filter 1") and my web cam, "USB20 CAmera [0100]" - uncheck them or better remove).
Once you have no filters defined, you will be able to start a VM and it should not hang your system as it did before. Once a VM is started, please try dynamically attaching USB devices to a VM by right-clicking the "USB" icon in the bottom right part of a VM window while VM is running and selecting the device.
Dynamically attaching USB devices one by one should reveal which device causes the system hang.

[ElQuia]

You only need to remove or disable all usb device filters as Perryg mentioned, (you mentioned you have "an empty filter (a.k.a. "New Filter 1") and my web cam, "USB20 CAmera [0100]" - uncheck them or better remove).
Once you have no filters defined, you will be able to start a VM and it should not hang your system as it did before. Once a VM is started, please try dynamically attaching USB devices to a VM by right-clicking the "USB" icon in the bottom right part of a VM window while VM is running and selecting the device.
Dynamically attaching USB devices one by one should reveal which device causes the system hang.

Will do later this night or tomorrow (-3 gmt here) and be back, just wanted to be sure 4.1.2 had the bug
Please post link to latest test build?
thanks

[misha]

@ElQuia: here it is again: http://www.virtualbox.org/download/test ... tiArch.exe

[ElQuia]

OK, Tried out 4.1.3 test build.
Installed, rebooted just in case.
enabled in vm xp settings the usb 2.0 controller WITHOUT any devices
XP VM booted ok, installed new version of guest additions
Rebooted
Manually (dynamically or whatever) enabled usb web cam, guest installed device and reported OK tried to access web cam with amcap. GUEST FROZE, opened window and when host said "installing device driver", GUEST tottaly froze.
Had to kill virtual box tasks.
Tried to run windows 200o guest, stalled halfway booting, XP would not boot, some VE ERROR ..bla. As if something was locked
Rebooted PC would not shut down completely had to reset halfway down.
Started host again
Ran XP, runs OK, put a 2 gb kingston pen drive in host, guest finds it OK, installes device, host installs device, all works ok, can open removable drive and copy files to / from it.

Just in case (2 guest crashes, one host freeze) rolled back everything (thanks acronis TI)

LOOKS LIKE THE WEB CAM IS THE BUGGER.
Ideas?

[misha]

I think this is similar to http://www.virtualbox.org/ticket/9275 .
We will investigate the cause of the issue and will get back to you.
So far the work-around for you is to avoid capturing your web cam by any VM.

[ElQuia]

I think this is similar to http://www.virtualbox.org/ticket/9275 .
We will investigate the cause of the issue and will get back to you.
So far the work-around for you is to avoid capturing your web cam by any VM.

For now I'll keep to 4.1.2, Better no usb than problems.
Will be waiting for news - Thanks for being there

[arty.net]

back temporarily to 4.0.8 and it's all ok. waiting for another vbox update

[bdmeyer]

Can you post a link to the current test build for this issue?
I have the same problem on a Win 7 64 bit Home Premium AMD A6-3650 APU

--Bruce D. Meyer

[colmac]

Hi,

where can I find the test build please. I am having the same problem with an XP guest on a Win 7 host. When I hit the provided URL I get

Not Found

The requested URL /download/testcase/VirtualBox-2011-08-18-21-25-24-win-4.1-rel-4.1.3-r73584-MultiArch.exe was not found on this server.

Colin

[jwttech]

@ElQuia: here it is again: http://www.virtualbox.org/download/test ... tiArch.exe

Can we please get this in a permanent download since it keeps getting deleted.

[RENaissance]

I have the same issue on Windows 7 64 bit SP1 Home Premium.