Windows 11 build 21990

Windows 11 build 21990 is an unleaked build of Windows 11. A screenshot of this build was posted on the "Inside Windows" Telegram by Zac Bowden, showing the search bar with "Windows Security" highlighted as an option. This build features a "Do not take screenshots of this build" watermark and a build hash in the bottom-left corner of the screen. It was also mentioned along with build 22117 in a Feedback Hub guide video posted by the Windows Insider Program channel on YouTube.