How to fix the “api-ms-win-crt-runtime-l1-1.0.dll is missing” error for Delphi 10 Seattle

If you experience this error during the start of Delphi 10 Seattle

"The program can't start because api-ms-win-crt-runtime-l1-1.0.dll is 
missing from your computer. Try reinstalling the program to fix this problem"

you need to (re)install the Visual C++ Redistributable for Visual Studio 2015, either via Windows Update or download and directly install the Visual C++ Redistributable:

1. Install all pending Windows Updates
   Go to Start – Control Panel – Windows Update
   Check for updates and install all pending updates, then restart the computer.
   After the restart repeat the steps above again until no more updates are available.
2. Download the Visual C++ Redistributable 2015
   For Windows 64-bit
   Visual C++ Redistributable for Visual Studio 2015 (64-bit)
   For Windows 32-bit
   Visual C++ Redistributable for Visual Studio 2015 (32-bit)
   
3. Run the vcredist_x64.exe (64-bit) or vcredist_x86.exe (32-bit) and select Uninstall if already installed
4. Run the .exe again and select Install and restart the computer