I am unable to start Ubuntu in oracle virtual box installed in windows 7 OS.I have imported .ova file.
this is the error message shown:
I had the same issue, after Windows updated itself.
On the virtualbox.org forums, they provide a few steps: https://forums.virtualbox.org/viewtopic.php?f=25&t=82106
However, that didnt help.
What did help, was updating VirtualBox from 5.1.22 to 5.2.6. My hypothesis here was that Windows had updated some
dlls so I need to update VirtualBox so that its compatible with the new
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