Microsoft released KB5019448 Out of Box Update for Windows 11 21H2. The update applies to Windows 11 SE, version 21H2 Windows 11 Home and Pro, version 21H2 Windows 11 Enterprise and Education, version 21H2 Windows 11 IoT Enterprise, and version 21H2.
This update improves the Windows 11, version 21H2 out-of-box experience (OOBE) and logon experience by providing eligible devices the option to update to newer Windows 11 versions. If the update is chosen, the update process will begin shortly after reaching the desktop.
Note This update applies only to the Windows 11 OOBE process and is available only when OOBE updates are installed.