Never install a custom OS on a drive containing data you haven't backed up elsewhere.
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. Download Windows Ultralight (22621 590) FBConan zip
The primary forums for custom Windows builders. Never install a custom OS on a drive
If the uploader provided MD5 or SHA-1 hashes, check your download against them to ensure the file wasn't tampered with. The goal is to reduce the OS footprint
While the idea of a "Windows Ultralight" build by FBConan sounds like a dream for anyone running an older laptop or a resource-heavy gaming rig, you should approach these custom ISOs with a mix of excitement and caution. What is Windows Ultralight (Build 22621.590)?
Since this is a third-party modification, you are trusting the developer hasn't included anything malicious (or unintentionally broken a critical system component). Where to Find It
Before you look for that .zip or .iso file, remember that "Ultralight" means things are missing:
