It is common to find unofficial versions of Windows, modified by users, on the Internet with diverse objectives: from altering the interface of the operating system to, more frequently, ‘lightening it’ by eliminating components of the same to optimize its operation in older hardware.

Using these ISO images to use them on our computers is usually a very unwise decision: It is impossible to know what kind of malware and back doors we could be installing in them. And that’s not to mention that many times this ‘optimization’ ends up leading to instability and unexpected errors.

However, many sysadmins create their own custom versions of Windows for a very legitimate purpose: being able to install the same software configuration on dozens or hundreds of computers, without forcing them to go later one by one by uninstalling or installing components.

If this is your case (or if you just like to ‘experiment’ with your Windows installation) you may be interested in what comes next.

https://www.archyde.com/how-to-create-a-custom-windows-10-iso-by-removing-os-components-with-win-toolkit/