It seems like Microsoft wants more and more Windows users to use the new Windows 8 or Windows 8.1 Operating System. That would be the reason for ending the retail sales of very popular Windows 7 Operating System. According to a recent notice on Microsoft’s website, the company will now not sale Windows 7 OS to retailers. But luckily, there are plenty of stores which are having various versions of Windows 7 with them. So, if you want then you can get it from stores like Newegg, Amazon etc.