We recently reported that Microsoft made the preview version of Internet Explorer 10 available for download for folks everywhere, and many people were keen on trying it out. However, one thing Microsoft failed to mention then was that IE10 isn’t going to work on your computer if it runs Windows Vista. Since Vista is coming to its end of its life cycle, it looks like Microsoft has chosen not to support the OS with the latest version of the web browser. IE9 didn’t support Windows XP, so it seems natural that their next version of the browser wouldn’t work with Vista as well. It looks like Microsoft is also trying to reduce the amount of different versions of Windows being used. By next year, we should see Windows 7 and Windows 8 being their dominant operating systems as the other flavors of Windows start to dwindle down in numbers.