for the latest features, the 21H2 build remains a popular choice for: AtlasOS - Optimized Windows, designed for enthusiasts.

VBS and Credential Guard are disabled, allowing tools like Mimikatz to extract NTLM hashes from LSASS memory without restriction.

A: Some Atlas OS 21H2 variants remove the VC++ redistributables. Download and install “All-in-One VC++ Runtimes” from TechPowerUp.

A fresh install of Windows 10 21H2 typically runs around 120–150 processes and uses 2.5GB to 3GB of RAM at idle. AtlasOS 21H2 slashes this down: Often reduced to fewer than 40.