Windows 10 Free Upgrade Available in 190 Countries Today

A man walks by a sing advertising the new Microsoft Windows 10 in New York City on July 29, 2015. Windows 10 free upgrade is Available 190 Countries Today. It is the biggest update to Windows in years and represents a number of new directions for Microsoft's premier software product. Windows 10 replaces Windows 8 and 8.1. Photo by John Angelillo/UPI