Windows 10 build 9903

Windows 10 build 9903 is a build of Windows 10, which was shared online on 29 January 2015.

File Explorer

 * Home page has been renamed to Quick Access and it is expanded in the navigation tree by default.
 * Favorites page is now hidden in the navigation tree.

Volume tray

 * The volume icon is now thinner and flatter in appearance.

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

Window thumbnail color error
Window thumbnails on the taskbar do not change color, but the user can change it after the computer restarts.