Windows 10 build 9908

Windows 10 build 9908 is a build of Windows 10, which was uploaded on 1 April 2022. It is the last build to have the Start screen, originally introduced in Windows 8 build 7779 (although it was nonfunctional).

New Action Center
A new Action Center has been added in this build. It is disabled by default and opens with the ⊞ Win keys.

To enable it, create and set  to 1 under

Hidden features

 * New tray clock user interface - enabled by creating key  under
 * Hidden lock screen - enabled by setting  to 1 under
 * Enable the XAML Start menu - set  to 1 under
 * New volume flyout - enable by setting  to 1 under

Hidden apps
There are a few hidden apps in this build:


 * Windows Default Lock Screen - accessed by running
 * Cloud Experience Host - accessed by running
 * Print Dialog - accessed by running
 * Windows Shell Experience Host - accessed by running

Installation
This build can only be installed on machines utilizing UEFI firmware since it hangs on a Legacy BIOS system.

Window thumbnail border color
If window auto-colorization is enabled, the window thumbnail borders on the taskbar do not change color even after the wallpaper changes. This issue can be remedied by manually changing the window color through the Control Panel or restarting Windows.