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I am using Virtual Box 5.1 on top of Windows 7 Host OS with Ubuntu 14.04 LTS Guest OS. I have already installed VBOXADDITIONS_5.1.14_112924 and restarted the Guest machine. The folder appears as mounted underneath the Devices in Files, and it appears as shared on the Host machine.

What permissions do I need to change on my Host/Guest OS to make this shared folder work?

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You have to add yourself to the shared folders group in the Ubuntu guest.

sudo adduser $USER vboxsf

Guest OS needs to be restarted after this.

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  • 10
    Worked for me but required a reboot to the guest VM first. – Itay Jul 27 '17 at 8:01
  • 5
    It worked for me after logout and login again only. – Gopal00005 May 14 '19 at 15:30
  • Note: No need to replace $USER with anything, the string needs to be input exactly. – Mohammad Sheraj May 19 at 12:45

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