If you want to upgrade an existing Windows 10 system or install a fresh version of Windows 10 on your device, downloading or updating using an ISO file is the easiest and most recommended method ...

Learn how to download a Windows 10 ISO file without using the Media Creation tool with this step-by-step guide.

Secure your copy of Windows 10 ISO now before it’s gone for good. Having it ready ensures you can install or fix Windows 10 anytime.

However, I plan to install Windows 10 onto a virtual machine using my newly created ISO file and then upgrade that VM to Windows 11. It should be an interesting experiment.

It's the same app that Microsoft itself uses in its guide for creating a Windows 10 bootable drive. Visit the company's website to download and install Rufus, which should only take a few seconds.