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Im trying to run Ubuntu in a virtual machine on virtual box. So far I have reinstalled virtualbox once to see if it was the cause, then I redownloaded the .iso, but when I try to run the machine it says it still won't run.

Failed to open a session for the virtual machine ubuntu.

The virtual machine 'ubuntu' has terminated unexpectedly during startup with exit code 1.

Result Code: E_FAIL (0x80004005) Component: Machine Interface: IMachine {480cf695-2d8d-4256-9c7c-cce4184fa048}

user3234022
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  • I had this problem tonight and I fixed it. I've been searching Stackoverflow for people who may have similar problems. Check out my answer about the [vboxdrv](https://stackoverflow.com/a/27718480/1116861) and see if that helps. – AllanT Dec 31 '14 at 08:47

5 Answers5

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If you didn't power off the vm after last run, try right-click on VirtualBox Manager >> Discard Saved State. This will start the vm from (virtual) power off state. Current state of vm will be lost.

Dejan
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Are you using VirtualBox 4.3.14? There's a known bug which could be related: https://www.virtualbox.org/ticket/13187

I was having this problem, downgrading "solved" it.

Luiza Utsch
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Here's what I did and it worked properly:

(1) Move/copy your hard disk image (my_old_vm.vdi) to a convenient folder, e.g. C:\my\VMS\my_new_vm\

(2) Create a new virtual machine (click the new button).

(2.b) At some point in time you are asked about the disk to be used; choose 'existing disk image' and browse to where you moved my_old_vm.vdi and select that.

(3) Start the VM and reconfigure the machine settings.

(4) Possibly delete the old machine. If you did not move the .vdi file, then do not delete all files related to the old machine.

This saved my day.

Frank-Rene Schäfer
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For me "Detachable Start" works, can you try it out?

Anand
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I just went through exactly the same problem on a Windows VM. Uninstalling the Norton Internet Security and restarting my computer solved the problem. Credit to this article that I found here: https://forums.virtualbox.org/viewtopic.php?f=6&t=62615

user3267567
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