Microsoft hopes that Windows 8.1 sparks more interest in the radical operating system than customers have shown so far. Although Windows 8 accounted for 6% of all copies of Windows used last month, that was about a third the share captured by Windows 7 at the same point in its post-release timeline.
Windows 8 has also been hampered by a dramatic slowdown in PC shipments and lackluster sales of tablets armed with the OS. The Windows 8.1 update could boost tablet sales, as it allows for devices with smaller screens, the category that has sold best so far this year.
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