it's legal, but whether or not it violates the license agreement is what you mean, I think. if I recall (big "if"), all editions of Windows from Pro upwards in

it's legal, but whether or not it violates the license agreement is what you mean, I think. if I recall (big "if"), all editions of Windows from Pro upwards include a license to run exactly one instance of the same edition of Windows inside a VM at a time. It does not need to be hosted by Hyper-V or be hosted on the associated licensed Windows installation. Windows 10 Enterprise, I think, includes 10 VM licenses per purchased license, but those 10 are all meant for the same user, which is the user who is using the physically installed license and are not to be spread around and used by different users. Windows licensing is kinda weird