These “ultralight” builds are not made by Microsoft. They come from forums like TeamOS, Ru-Board, or various torrent sites.

on any machine you care about.

: When considering a customized version like an "Ultralight" variant, users should be cautious about potential compatibility issues with software and hardware, as well as the potential omission of certain security features.

Standard Windows 10 Pro can consume 2GB to 4GB of RAM at idle. The modification drastically reduces this footprint—often to under 1GB—by removing non-essential services and features. Windows 10 - release information - Microsoft Learn

Windows 10 22h2 190455198 Pro - Ultralight [better]

These “ultralight” builds are not made by Microsoft. They come from forums like TeamOS, Ru-Board, or various torrent sites.

on any machine you care about.

: When considering a customized version like an "Ultralight" variant, users should be cautious about potential compatibility issues with software and hardware, as well as the potential omission of certain security features. windows 10 22h2 190455198 pro ultralight

Standard Windows 10 Pro can consume 2GB to 4GB of RAM at idle. The modification drastically reduces this footprint—often to under 1GB—by removing non-essential services and features. Windows 10 - release information - Microsoft Learn These “ultralight” builds are not made by Microsoft