You can download the Windows 10 ISO without Media Creation Tool to update or clean up the new version of the operating system, but Microsoft hides the option for Windows users.

The company makes available ISO files for every release of Windows 10, including Windows 10 May 2020 Update (version 2004), the only issue is that when you go to the support site, you don't have the option to download the ISO file directly. Instead, you just have the option to get a MCT or an Assistant Upgrade.

The explanation is that Microsoft's support website will recognise the operating system installed on your laptop, and if you are using Windows 10, then Microsoft needs you to use the Media Creation Tool. However there is a workaround to download the Windows 10 ISO file directly without the need to use the Media Creation Tool if you don't want to go through the extra steps.

It's just a matter of letting the support site believe you're using a different operating system.

In this guide, you will learn how to download the Windows 10 ISO file directly from Microsoft servers without the Media Creation Tool.

https://www.xclusivebyte.com/2020/11/download-windows-10-iso-without-media.html

Microsoft makes Windows 10 ISO images available to everyone through its download website, but if you’re already using a Windows machine, it forces you to download the Media Creation Tool first. Here’s how to download Windows ISOs without the creation tool.

https://www.novabach.com/how-to-download-a-windows-10-iso-without-the-media-creation-tool/