The company also appears to be tweaking its desktop user interface to improve and flatten the traditional icons, alongside some taskbar changes for future Cortana integration and virtual desktops.

The target audience for the event underscores the reputation repair work Microsoft needs to do in the corporate world.

Business-tech sales represent about two-thirds of Microsoft's profit but the company alienated some corporate-PC users with the 2012 introduction of Windows 8 along with the Surface line of tablets.

The operating software was designed to work best on touchscreen devices, but some corporate-tech buyers said the software did not work well on the typical office-worker setup of a keyboard, mouse and non-touchscreen PC.

The software maker, however, is not expected to release preview of its updated version of Windows RT that may include Windows Phone components until early 2015.

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