Unable to download Epic Games Launcher due to Setup Wizard ending prematurely

Multiple times I’ve tried to download Epic Games. When I click on ‘download for: Windows’, the pop-up tells me that Epic Games is currently running and I need to close it and run the Setup Wizard again. Then, another pop-up comes up, telling me that the Epic Games Launcher Setup Wizard has ended prematurely because of an error, and that my system is not modified. I have tried downloading Epic Games but to no avail because of this problem. (I have installed Epic Games previously before, and then uninstalled. So, technically, this is a re-install, if that seems to be the root of the problem.)