However, if you want to do a clean install, you will need the ISO file. Here, you will find ISO files for Wind(October Update) as well as older builds like the April 2018 update. If you don't want to do that, you can try other sites like. Some of them, like CNET, point back to Microsoft's website. You can directly download the Windows 10 ISO file from third-party download centers. The Windows 10 ISO image, in this case, will contain all the installation files required to create bootable media on a USB flash drive or a DVD. Unless you have purchased an online copy of Windows 10 or upgraded from an earlier version, you will need the ISO file being used to install the operating system. Method 1: Download Windows 10 ISO Image Directly without Any Tool You can get direct download link for various versions of Windows 10, including Windows 10 2004, Windows 10 20H2, Windows 10 1909, Windows 10 1903, Windows 10 1809, Windows 10 1809, Windows 10 1803, Windand To download an old version of Windows 10 ISO, please use Windows ISO Downloader instead.