Windows 10: Windows 10 - Microsoft (Metro) apps invisible in Settings and Taskbar

when I open Settings - Apps & features I can't see the icons of Microsoft Corporation, neither in my taskbar, I only see a blank square with pixels, see below my example.
However, they are visible in the Start Menu
How to solve this problem.
Thank in advance for the co-operation





:)

 

Taskbar buttons are there but cannot be seen

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