Zip: Download Windows Ultralight (22621 590) Fbconan

By removing telemetry, Windows Defender, and dozens of background services, the OS feels significantly snappier than the stock version.

Some "Light" builds remove the Microsoft Store, Xbox services, or printing support to save space. If you need these, you'll have to reinstall them manually.

Test the ISO in VirtualBox or VMware to see if your essential apps even run. Download Windows Ultralight (22621 590) FBConan zip

This is a "debloated" version of Windows 11 (22H2). FBConan is a well-known developer in the custom OS scene who specializes in stripping Windows down to its bare essentials. The goal is to reduce the OS footprint so it uses less RAM, fewer CPU cycles, and takes up minimal disk space.

Never install a custom OS on a drive containing data you haven't backed up elsewhere. By removing telemetry, Windows Defender, and dozens of

Before you look for that .zip or .iso file, remember that "Ultralight" means things are missing:

Often, Windows Defender and Windows Update are stripped or disabled. You are responsible for your own security. Test the ISO in VirtualBox or VMware to

If the uploader provided MD5 or SHA-1 hashes, check your download against them to ensure the file wasn't tampered with.