Greetings @anonymous_user_1108bca3 !
We see that this is your first post in our forums!
Welcome to the Unreal Engine community! 
I’m sorry to learn that you are having issues installing the Epic Games Launcher. I’ve found a post from a thread that may be of some assistance to you.
I hope this helps! Thank you for being an important part of our growing community, and I wish you an amazing day!