: Reintroduced a startup sound and featured smoother, more "drawn-out" animations for minimizing and maximizing windows.
: A system-wide aesthetic shift replaced sharp corners with rounded edges on windows, buttons, context menus, and tooltips.
: For the first time, taskbar icons and the Start button were centered by default, though users could move them back to the left in settings. : Reintroduced a startup sound and featured smoother,
: Because this is a leaked, unofficial build from 2021, it is considered highly unstable and may contain security risks if downloaded from untrusted sources like Internet Archive or SourceForge . It is recommended to use the official Microsoft Download page for stable releases. Windows 11 build 21996
: x64FRE indicates a 64-bit "Free" (retail/non-debug) version. : Because this is a leaked, unofficial build
The string refers to the first major leaked build of Windows 11 , which appeared online in June 2021. This build (10.0.21996.1) provided the world's first look at Microsoft's next-generation operating system before its official announcement. Key Features of Build 21996
: Live Tiles were removed in favor of a simplified grid of "Pinned" apps and a "Recommended" section for recent files. The string refers to the first major leaked
: This specific ISO includes editions like Home , Pro , and Education .