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}
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.
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.
For me "Detachable Start" works, can you try it out?
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.
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
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