UE4 crashes when I try to download the engine

Hi everyone, here is my trouble:
I recently downloaded the Epic Games Launcher to start learning and using UE4.
But after installing the launcher, I just can’t download the engine. The download begins but the launcher crashes after few minutes. Sometimes, when I restart the launcher, I can see a “Code 0” or “Code 5”. I already saw some posts about that issue but no tips succeeded for me.
Thanks for replying and sorry for my english.

Configuration:

Hi TheDarkMaster,

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!