Windows 11 build 21990

Windows 11 build 21990 is an unleaked build of Windows 11. A screenshot of this build was initially posted on the "Inside Windows" Telegram by Zac Bowden, showing the search bar with "Windows Security" highlighted as an option; the screenshot originated from a video that was uploaded to Microsoft servers and later found online.

This build was also mentioned along with build 22117 in a Feedback Hub guide video posted by the Windows Insider Program channel on YouTube.