Poco... o nulla... a meno di accordi di tipo "Premier
level support agreement"...
Microsoft does not test or support Microsoft software running in
conjunction with non-Microsoft hardware virtualization software.
...
For Microsoft customers who do not have a Premier level support
agreement, Microsoft will require the issue to be reproduced independently
from the non-Microsoft hardware virtualization software.
...
For Microsoft customers who have a Premier level support agreement,
Microsoft will use commercially reasonable efforts to investigate potential
issues with Microsoft software running in conjunction with non-Microsoft
hardware virtualization software.