Windows10UpgraderApp.exe - System Error (api-ms-win-core-libraryloader-l1-1-1.dll)

The program can't start because
api-ms-win-core-libraryloader-l1-1-1.dll is missing from your computer. Try reinstalling the program to fix this problem.

Is working.

Renamed C:\Windows10Upgrade\wimgapi.dll      ->        C:\Windows10Upgrade\wimgapi.dll.ori
Copy C:\Windows\System32\wimgapi.dll      ->        C:\Windows10Upgrade\wimgapi.dll

Click on Try Again Button.