October report. The continued “success” of XP,despite Microsoft’s efforts to promote Vista and Windows 7 is widely seen as a problem for Microsoft and a sign of unwillingness of users and businesses to be dragged automatically dragged along with each new OS version. Many enterprises have just completed or are in the process of transitioning to Windows 7, so for these users, moving forward to Windows 8 might not be a near-term event. However, consider the large numbers of users still running XP, according to NetMarketShare. In the U.S. that number is 22%. For businesses, that is still a large number. For Microsft, it is an opportunity.