Last-minute lazybones dump Windows XP

Windows 7 outduels Windows 8 as haven for those abandoning nearly-retired XP

Windows XP and Windows 8 returned to their traditional pattern in March, with the soon-to-be-retired XP losing the most user share since December while Windows 8 gained ground.

March's trends were good news for Microsoft, which has been urging customers to forsake Windows XP before it falls off the support list in a week's time, and replace their aging PCs with a new system running Windows 8.1.

According to Web analytics vendor Net Applications, Windows XP dropped 1.8 percentage points in "user share," an estimate of the fraction of the world's computer owners that run a specific operating system, to end March with 27.7% of all desktop and notebook computers. In the two months prior, XP swam against the stream, gaining more than half a point.

The March slide in XP's user share was its largest decline since December 2013, when the 13-year-old operating system lost 2.2 percentage points.

Windows XP accounted for about 30.5% of all Windows-powered PCs last month. The difference between the statistics for all personal computers and only those running Windows was due to the latter powering approximately 91% of all notebook and desktop machines.

Microsoft will provide the final public patches for known vulnerabilities in XP next Tuesday, April 8. After that, customers will face an increasingly dangerous future where cyber criminals dig up new vulnerabilities -- perhaps by examining fixes for still-supported editions, such as Windows 7 -- and unleash exploits on people who still rely on the retired OS.

To entice customers to leave XP behind, Microsoft has asked more technically-astute users to help friends and family upgrade or select a new PC -- a move that those very same users mocked -- and offered small incentives, such as a $50 gift card and a $100 discount on more-expensive systems, in an effort to cut XP's user share.

The company's security experts have also weighed in, most recently telling customers that the most popular PC tasks -- browsing the Web and opening email -- will put them in the crosshairs of cyber criminals if they continue to use XP.

With so many of the world's PCs still running XP just days before patches stop, Microsoft faces a potential public relations problem if, as virtually everyone expects, widespread attacks emerge. That could damage the brand's reputation.

Computerworld now projects that Windows XP will power between 26.8% and 27.3% of all personal computers at the end of April, and between 20% and 24% of the world's PCs at the end of 2014.

Windows XP's user share slides
Windows XP's long-term decline, interrupted for two months, resumed in March as its user share of all personal computers dropped under 28%. (Data: Net Applications.)
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