Since Windows is not being helpful, we could try something else.
I will need you to open a command line window (I think you can do that in Win10 by pressing the Windows button on your keyboard, typing CMD, then press Enter).
Then you need to reach the directory where ERA is installed (I can't assume you know how to do this, so let me know if you need more information about this step).
From there, I need you to run "ERA-RMC.exe" and let me know (or post/PM me with a screenshot) the result.
Also, send me a PM with any .log file in the directory, or inside /Server, most commonly it would be called ERA-Support.log.
And just to get more information, did you get a warning from the Windows firewall when starting the first time, like it is shown in the tutorial video?