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Thread: Virtual Box - Failed to access the USB subsystem.

  1. #1
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    Oct 2011
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    Virtual Box - Failed to access the USB subsystem.

    Hello everyone,

    I'm having troubles accessing USB on my Virtual Box.

    Here's the message I'm getting:


    p, li { white-space: pre-wrap; } Failed to access the USB subsystem.
    VirtualBox is not currently allowed to access USB devices. You can change this by adding your user to the 'vboxusers' group. Please see the user manual for a more detailed explanation.


    Any help would be appreciated.

  2. #2
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    Ubuntu 11.10 Oneiric Ocelot

    Re: Virtual Box - Failed to access the USB subsystem.

    Here it's explained with pictures:

    http://news.softpedia.com/news/How-t...t-111715.shtml

  3. #3
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    Oct 2011
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    Re: Virtual Box - Failed to access the USB subsystem.

    Thank you for your willingness to help, but this article shows how to deal with it on Ubuntu, and I'm on Kubuntu. It's different.

    I can't follow the steps. When I go to User Groups, there is no "Click the "Unlock" button..."

    I'm attaching a screenshot.
    Attached Images Attached Images

  4. #4
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    Re: Virtual Box - Failed to access the USB subsystem.

    from terminal

    Code:
    sudo usermod -a -G vboxusers username
    where username is your username then logout and back in
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  5. #5
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    Re: Virtual Box - Failed to access the USB subsystem.

    That worked!

    Thank you very much!

  6. #6
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    Re: Virtual Box - Failed to access the USB subsystem.

    Quote Originally Posted by marer13 View Post
    That worked!

    Thank you very much!
    Of course it worked

    You are welcome.

    Cheers
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  7. #7
    Join Date
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    Ubuntu 12.04 Precise Pangolin

    Re: Virtual Box - Failed to access the USB subsystem.

    Code:
    sudo usermod -a -G vboxusers username
    didn't work for me. Is it possible that the group is not allowed to access my USB devices??

    Code:
    sudo groups myuser
    myuser : myuser adm cdrom sudo dip plugdev lpadmin sambashare vboxusers
    Weird it doesn't work for me...
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  8. #8
    Join Date
    Jan 2008
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    Nappanee, IN
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    602
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    Xubuntu 12.04 Precise Pangolin

    Re: Virtual Box - Failed to access the USB subsystem.

    You really should have opened a thread to ask your question. VirtualBox has changed since the tutorial was written, requiring Oracle VirtualBox (non-free) and the VirtualBox Extension Pack installed on the Host computer, as well as the user being part of the vboxusers group.

  9. #9
    Join Date
    Oct 2012
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    Re: Virtual Box - Failed to access the USB subsystem.

    Quote Originally Posted by geek.de.nz View Post
    Code:
    sudo usermod -a -G vboxusers username
    didn't work for me. Is it possible that the group is not allowed to access my USB devices??

    Code:
    sudo groups myuser
    myuser : myuser adm cdrom sudo dip plugdev lpadmin sambashare vboxusers
    Weird it doesn't work for me...
    Are you sure you have also installed the guest additions extention pack and have enabled USB access in virtualbox Preference

  10. #10
    Join Date
    Feb 2008
    Location
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    14,690
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Virtual Box - Failed to access the USB subsystem.

    If a post is older than a year or so and hasn't had a new reply in that time, instead of replying to it, create a new thread. In the software world, a lot can change in a very short time, and doing things this way makes it more likely that you will find the best information. You may link to the original discussion in the new thread if you think it may be helpful.

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