Mark HachmanSenior Editor, PCWorld

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BitDefender, Kaspersky top list of best Windows 8.1 antivirus software

What's the best antivirus software to buy right now? In February 2015, the list includes BitDefender, Kaspersky, and Avira.

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Microsoft's Satya Nadella is picking March Madness winners better than Bing

It's actually worse than that. Cricket fan--yes, cricket-- and Microsoft CEO Satya Nadella is beating both Google and his own company's Bing at NCAA brackets. It's just not fair.

Microsoft: Office will be free for devices under 10 inches

Microsoft believes that screens smaller than 10 inches aren't used by 'professionals,' so don't expect it to charge for editing and viewing Office documents. Oh, and the Surface Pro mini -- probably dead.

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The future of Microsoft Surface: What to expect from Surface 3 and Surface Pro 4

Cool new features on the horizon include power-sipping chips and the Hello authentication technology.

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Microsoft pursues Android users, preloading Office on Samsung, Dell tablets

The company's eager to extend its services beyond Windows, but some users may see this freebie as bloatware.

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Microsoft releases Windows 10 Build 10041, the first since January, with upgrades galore

Upgrades include simplifying the virtual desktop process, improving image management features, and squashing a mess o'bugs.

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OneDrive finally stores your MP3s and plays them back via Xbox Music

Storing your music in the cloud is a convenience Microsoft should have offered long ago. Now it does.

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Windows 10 hardware specs allow for huge phones and teeny tablets

Phones with screens up to 8 inches diagonally? Tablets as small as 7 inches? Microsoft sets some broad, overlapping spec ranges for mobile devices, especially Windows 10 for phones.

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Microsoft says Windows 10 could ship this summer, and new features keep coming

Microsoft said it plans a worldwide launch when Windows 10 ships this summer, along with possibly two big-name Windows Phone providers and some extra oomph for its apps store.

Elon Musk: Teslas could drive themselves, today

Tesla founder Elon Musk said that its Tesla electric cars could drive themselves today, but not with the reliability that they need to make them safe. But it's only a matter of time, and of hardware.

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Microsoft's Windows Hello will let you log in to Windows 10 with your face, finger, or eye

The latest Windows 10 technology that Microsoft has confirmed is Windows Hello, a biometric identification system that will recognize you and automatically log you in.

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Windows 10 does away with the reinstallation headaches

No more downloading update after update. Windows 10 installs and refreshes will save significant space compared to Windows 8.1, and take far less time, too.

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Microsoft's Bing eyes the 2016 presidential election after predicting NCAA brackets

Microsoft's Bing team explains what to expect as March Madness rolls on: an updated NCAA bracket UI and keys to the game. And it's gearing up for the 2016 presidential election, too.

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Microsoft rolls out Delve to Office 365, previews PowerBI and Skype for Business

Even a classic productivity suite needs refreshing. Adding the Delve research tool to Office 365 subscriptions is just one of many new features Microsoft introduced this week around its Convergence conference for business customers.

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March Madness? Nah. Microsoft's Bing picks undefeated Kentucky to win NCAA tournament

Microsoft's Bracket Builder tool is now live, and it will make your NCAA bracket picks for you if you have no idea who will come out on top of March Madness.