TechWindows 10, 1 Month On Microsoft needed Windows 10 to succeed and since the launch of its newest operating system in late July, this is how Windows 10 has been faring : More than 75 million devices are now running Windows 10 – and growing every day. Windows 10 is running in 192 countries, that’s virtually every country on the planet. More than 90,000 unique PC or tablet models have upgraded to Windows 10. More than 122 years of gameplay have streamed from Xbox One to Windows 10 devices. Windows Store for Windows 10 has seen 6X more app downloads per device than Windows 8. In response to “tell me a joke”, Cortana has told over half a million jokes since launch.