Microsoft to launch Windows 10 OS today

San Francisco, July 28

Microsoft's new Windows 10 operating system (OS) debuts tomorrow, as the longtime leader in PC software struggles to carve out a new role in a world where people increasingly rely on smartphones, tablets and information stored online.

No one's expected to line up overnight for Windows 10, the way people did 20 years ago for Windows 95. But Microsoft is counting on tens or even hundreds of millions of people to download its latest release for free in the coming months.

The launch will be accompanied by a global marketing campaign for an event the company hopes will be pivotal — both for its own future and for a vast audience of computer users around the world.

Windows 10 is coming to PCs and tablets first, but it's also designed to run phones, game consoles and even holographic headsets. It has new features, a streamlined Web browser called Edge and a desktop version of Cortana, the online assistant that is Microsoft's answer to Google Now and Apple's Siri.

Still, the company insists Windows 10 will seem familiar to users of Windows 7, the six-year-old operating system still running on most PCs. Microsoft and PC makers want to erase the memory of the last big update, 2012's Windows 8, which alienated many with its jarring, unwieldy design. AP