Hi Clol7,
First, check to make sure you have VS 2015 or the Redist installed on your computer, as Bariudol points out, it is necessary to run 4.10 and above. If this is not the error you are experiencing, try running a verify on your engine build. You can do this by going to your Launcher>Library>Engine version dropdown menu>Verify. This will check to see if any files have been damaged or are missing and repair or replace them as appropriate. If this does not work and the suggestions from other developers here does not work, please let me know and we can continue trying to resolve this error.