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I installed Ubuntu 64 bit on my laptop (2Gb RAM) and exported to an appliance. We copied the ova file to another machine (I7, 16Gb RAM, Window7 64 bit). The target machine is an HP Elitebook 9470M Ultrabook
The virtualbox is 5.02R on both sides.
Importing works without complaint, but when run, the vm will not load with the error message:
Failed to open a session for the virtual machine sitdev
A new node couldn't be inserted because one with the same name exists
Not sure if this is relevant, but having given up momentarily, we tried loading Ubuntu-64 and installing a new virtual machine from scratch. The only choices were 32 bit. Nothing 64.
Could this be some BIOS setting? Clearly the cpu can support 64 bit OS?
I will try the fix, but what about being unable to create a new 64bit unix vm? – Dov – 2015-09-03T20:58:59.117
Either VT-X is disabled in BIOS or some other application is already using it. Close all other applications and try again, and check your BIOS settings. – onik – 2015-09-03T21:03:16.717
1The other workaround mentioned in the bug report thread, to simply disable and then re-enable USB in the Settings GUI, also works and requires no OVA hackery. – Dan Barowy – 2016-01-25T20:52:40.677