Two and a half years after the company made it available to the general public, Windows 10 is now the most popular operating system from Microsoft, according to analytics firm StatCounter. From a report: Every month, StatCounter reports on the state of the desktop operating system market. Since October last year, the analyst company's figures have shown the gap between Windows 10 and Windows 7 narrowing. It looked as if the newer OS would overtake the older one in November, but that didn't happen, and it didn't happen in December either. However, in January, according to StatCounter, Windows 10 finally claimed the top spot. The latest figures show Windows 10 on 42.78 percent, up from 41.69 percent in December 2017. That's an increase of 1.09 percentage points.