Windows 10 to take longer to reach billion-device goal

A child stands at a computer display stand for the Windows 10 operating system at the Microsoft store at Roosevelt Field in Garden City, New York July 29, 2015. Microsoft Corp's launch of its first new operating system in almost three years, designed to work across laptops, desktop and smartphones, won mostly positive reviews for its user-friendly and feature-packed interface. REUTERS/Shannon Stapleton

SAN FRANCISCO: Microsoft said it will take longer than initially expected for Windows 10 to reach a billion devices due to the lack of traction in its smartphone business. 

The company had set an ambitious goal of having a billion gadgets running on Windows 10 monthly when the latest generation operating software was release nearly a year ago.