If you are technically inclined, creating your own ultralight ISO is the only secure way.
The edition represents a specialized, community-modified version of Microsoft’s final Windows 10 feature update. Designed for enthusiasts, gamers, and users with aging hardware, this "Ultralight" build strips away the bloatware of a standard installation to deliver a lean, high-performance environment. Core Technical Foundation: Build 19045.5198
builds. These builds are designed to drastically reduce system resource usage while maintaining core functionality for older or low-spec hardware. Key Build Details OS Version : Windows 10 22H2. Build Number : 19045.5198 (A specific Release Preview build from late 2024). Ultralight Optimization : Typically reduces the ISO size to roughly and the installed footprint to approximately Microsoft Learn Why This Build Is "Interesting" Extreme Performance : Unlike the standard Windows 10 22H2 , which uses about 1.1 GB of RAM
Many "Lite" versions disable Windows Defender and Windows Update. Without monthly security patches, the system is highly susceptible to malware.