have you tried to select checkbox for "Expose hardware assisted virtualization to the guest OS" under VM CPU settings?
You can see this option using web client or new embedded host client.
Thanks Haridas! I never think to check the web client.
We are trying to achieve the same setup, running Virtuabox for browser testing in a VDI environment.
What are your experiences with it? I though that VMWare does not support this but I'm not 100% sure if this is indeed the case.
Have you ever had any blue screens or stuff like that happening after enabling this?