Led by Windows 7, Microsoft's operating systems still control the enterprise, but the software giant's days of dominance are waning. As a recent Forrester report highlights, mobile devices and BYOD have made the state of enterprise operating systems far more complex.

A majority of enterprises have migrated to Windows 7 or are planning to do so. But for Windows XP holdouts ready to side-step Windows 7 for the upcoming Windows 8 OS, you are risking a gap in support, stresses research firm Gartner in a new "first take" analysis of Windows 8 migration in the enterprise.

Windows 8 won't be adopted as a standard at your business anytime soon, according to a new Forrester report. But that doesn't mean IT shouldn't prepare for it to sneak through the BYOD side door. Here are five ways to be ready for Windows 8.

For a variety of reasons, some businesses are looking to downgrade from Windows 8 to Windows 7. The good news is that Microsoft's business licenses come with downgrade rights, but the catch is that the rules can be tricky and compliance could become an issue. Here are some clarifications on your rights when downgrading from Windows 8 or standardising on earlier Microsoft operating systems.

Microsoft made big bets on Windows 8, Windows Phone and Surface tablets in 2012, and now it needs to make those bets to pay off. As more consumers and businesses go mobile, 2013 will be Microsoft's most challenging year yet.

It was a challenging year for Microsoft as it continued to adapt to a mobile world and launched Windows 8. Here's a look back at the most popular CIO.com stories and slideshows about Microsoft from 2012.