Windows 11 is the latest operating system from Microsoft with the overhauled interface and other changes. However, there is a way still to download and install Windows 11 using the ISO file, however, unofficially. It is because Microsoft yet has not released the Windows 11 ISO file officially. Microsoft Windows 11 is there for Insiders who are using Windows 10, as an upgrade, however, if you want a clean installation on your PC, then still that is not possible.