Around two-thirds of the PCs in China and over half the PCs in Russia and India are running on unauthorized versions of Windows

Windows XP is still the world’s third most popular operating system if those numbers are accurate. Netmarketshare calculated that the world’s most popular operating system is Windows 7 with a 46.63% market share. Second most popular is Windows 10 with a 29.26% market share.

Around two-thirds of the PCs in China and over half the PCs in Russia and India are running on unauthorized versions of Windows, Endgadget reported. The Software Alliance estimated that 70% of the computers in China, 64% of the computers in Russia, and 58% of the PCs in India are using bootlegged versions of Windows.