Initially the touch keyboard in Windows 10 was similar to one available in Windows 8, but it changed in Windows 10 build 10056, which was one of the pre-release builds.
It is included since Windows XP Tablet PC Edition and has undergone several changes in Windows Vista, Windows 7 and Windows 8. The Touch Keyboard is the built-in app in Windows 10 to type using a touchscreen or a pen. You can download it here: Download Winaero Tweaker. You can save your time and use Winaero Tweaker instead. To save your time, I have created ready-to-use Registry files which you can download here:
Once this is done, the Touch Keyboard will appear above the taskbar, so your running tasks, pinned apps, clock and the notification area (system tray) will remain visible and accessible with a single tap or click. Note: Even if you are running a 64-bit Windows version, you still need to create a 32-bit DWORD value. Tip: You can access any desired Registry key with one click. If such a key doesn't exist in your Registry, then just create it.