With today's release of the Windows 10 (21H1) May 2021 Update, you now download the Windows 10 21H1 ISO for the operating system directly from Microsoft.

But Fast ring updates are delivered only via Windows Update, and at this point we don't know how Microsoft will make ISO copies of the final Windows 10 release available for download.

Now that Microsoft has released Windows 10 1909, otherwise known as the November 2019 Update, ISO disk images are also available. As it is always a good practice to have the original media for the ...

As mentioned, ISO files can be stored on DVDs, and by ripping these DVDs, you can always have the option to perform a clean installation of Windows 10. A recommended software for ripping is 'DVDFab ...

The free Windows Media Creation Tool from Microsoft grants you the power to create your own bootable Windows 10 backup, but you have to find and download it first.

Windows 11 is available to download as an .ISO file. You might want a drink before you start, though.

1. Download the Windows 10 ISO File Windows 11 isn't currently compatible with Boot Camp Assistant on MacOS. So, you'll need to download Windows 10 instead.