Windows 10 build 9838 (fbl partner eeap)

Windows 9 build 9838 (winmain) is the RTM build of Windows 9, which was uploaded to BetaArchive on 17 January 2019 only in the Japanese language.

DockingController application
DockingController was used as an application for Surface tablets to switch between tablet mode and desktop mode.

Network icon on the notification taskbar
When you click on the network icon on the taskbar in the notification area, the network settings open in the PC settings that do not depend on the Charms sidebar that were in Windows 8 and 8.1.