LOS ANGELES — Microsoft Corp.’s foray into the tablet computer market proved costly in the fourth quarter. The world’s largest software company booked a $900 million write-down to account for the deep price cut it applied to its Surface RT tablet, a move to spur sales amid sluggish demand.
The Redmond-based software giant cut the Surface RT’s price to $349. The $150-per-device cut contributed to fourth quarter earnings that fell short of Wall Street forecasts, but even without the charge, earnings would have missed expectations.
Microsoft also saw revenue from its flagship Windows operating system decline 6 percent after excluding the late recognition of revenue from last year, when it offered discounted upgrades to users of older systems.
The reception to its latest operating system, Windows 8, has been poor and the results reflected that. Analysts believe the new operating system is contributing to the long slump in personal computer sales.
Despite weakness in key areas, revenue and profitability improved in Microsoft’s other lines of business, including enterprise software, servers and tools, the Xbox video game division and the Bing search unit.
Net income in the April-June quarter came to $4.97 billion, or 59 cents per share, reversing a loss of $492 million a year ago when it wrote down almost the entire value of its 2007 purchase of online ad service aQuantive.
Excluding the Surface charge, earnings were 66 cents per share, short of the 75 cents per share expected by analysts polled by FactSet.
Revenue grew 10 percent to $19.90 billion, also below the $20.72 million expected.