Microsoft has confirmed that its previously announced Windows 8 upgrade will cost just $39.99. That means people already running Windows XP, Windows Vista, or Windows 7 on their computers will pay a ...

Windows users beware. Microsoft has confirmed that Secure Boot certificates, first issued in 2011, expire in 8 just weeks. This has not happened before, and it will affect hundreds of millions of PCs.

Microsoft is betting that consumers will readily adopt its graphically oriented, touch-friendly operating system called Windows 8. Windows 8's major new feature is a "Metro" user interface, similar to ...