On this website, you can download Windows 10 all versions: 1809, 1903, 19. Method 1: You use the web to download Windows 10 ISO free from Microsoft If you are one of those users who want to perform a clean reinstall or install of Windows 10, you will be glad to know that you can now easily download Windows 10 ISO for free right from Microsoft. People who have upgraded to Windows 10 might want to perform a clean install of Windows 10 from USB drive. If you want to reinstall Windows 10 for some reason or if you cannot wait to get the latest build of Windows 10, you can download the latest version of Windows 10 from Microsoft. Microsoft has released the latest Windows Update (version 1903) via Windows Update service for users running earlier versions of Windows 10.