Don't-Miss Operating System Stories

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Windows XP lives on: Avast survey shows 27 percent of its XP users don't plan to switch

XPocalypse? What XPocalypse? A big chunk of antimalware software vendor Avast's users are sticking with XP despite the many risks.

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Microsoft Windows Phone 8.1 review: Major upgrade closes the gap with iOS and Android

With the Cortana digital assistant and a vibrant new interface, the OS is finally positioned to attract the users and developers it critically needs.

Windows XP Bliss 2014

The story of the Windows XP 'Bliss' desktop theme—and what it looks like today

Like Windows XP itself, Microsoft's 'Bliss' image of rolling green hills has aged, and evolved. Here's its story— and what the real-world site looks like today.

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Obituary: Windows XP passes away, leaving behind millions of mourning supporters

Windows XP, Microsoft's beloved seventh major operating system, has died at the hands of its creators. It was 12.

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Windows XP support will be available after April 8—just not for you

Microsoft is busy signing last-minute deals with big business to provide support for Windows XP after the deadline ends. What would you pay to get in on this?

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UK government pays Microsoft £5.5M to extend Windows XP support

The U.K buys 12 months of "breathing space" before support for Windows XP expires.

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Hands-on: Microsoft's new Cortana digital assistant

At first blush, Microsoft's Cortana gives Google Now a run for its money.

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Cortana takes the spotlight as Microsoft updates Windows, Windows Phone, Office

Microsoft opens its Build 2014 conference by announcing everything from a rebirth of the Windows Start menu to universal apps.

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Windows for the next billion devices: Meet Windows for the Internet of Things

Robots and keyboards and makers, oh my! Microsoft's Windows for the Internet of Things aims beyond traditional computers.

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Hands-on: Windows 8.1 Update helps solve mouse and keyboard woes

Don't use touch? Neither do 60 percent of Windows PC users. The Windows 8.1 Update releasing April 8th aims to make the transition easier for mouse-and-keyboard faithful.

PCWorld News

Wall Street Beat: Mixed news for tech puts dent in sector confidence

Nasdaq Computer index closes down for the week

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Windows leaker Wzor vanishes after feds arrest Microsoft mole

Noted Russian leak website disappears, Twitter account vanishes the day after a Russian national was accused of sharing Microsoft trade secrets

Bill Gates: WhatsApp was pricey, Office needs 'more than a tuneup'

In a sweeping interview with Rolling Stone, Bill Gates reveals his affinity with Zuckerberg and lauds innovation in California, even though 'half of the companies are silly.'