Microsoft warns on Windows 7 upgrade tool | Beyond Binary - CNET News. Let's get this straight. After years of trying to foist Vista on Microsoft customers, and after practically begging users to stop using the last decent Microsoft OS, Windows XP, Microsoft finally gets it right with Windows 7. Now, after a third party vendor, Parallels, which is the company that allows Windows to run on Apple boxes, creates a product that makes it easy for Microsoft customers to upgrade to Windows 7 by running the old version, XP, in a virtual space on a Windows 7 computer, Microsoft claims that this is a violation of its licensing agreement with 80% of its customers? Apparently, Microsoft doesn't like its customers to run XP in a virtual space on a computer running another OS. Hey, Microsoft, I am a lawyer, and even I think that is draconian. Get over yourself, or you might find the world passing you by, and moving lock, stock and barrel to Google's Chrome OS. Maybe free, open, in the cloud operating systems are what computer users should be using? As much as I like Windows 7, Microsoft is really scrambling for dollars now.