Why cant finish the download?

I finished the download. But a error code pops up.

ah that!! disable antivirus and firewall when installing the engine, dont worry you can re enable them afterwards its only needed for installing not for using

Hi 1 2,

I’m sorry that you are having an issue with the Epic Games Launcher. In order for us to offer the best support, we have recently modified the process for how Epic Games can help troubleshoot your Launcher issue. Please visit http://help.epicgames.com/ for technical support, here you can find information and solutions for common issues, as well as a contact form if you still need additional assistance. Thanks!