blad

https://www.youtube.com/watch?v=SUIqN8dZ_VQ

siema po tym poradniku wyskakuje mi taki blad wie ktos moze jak to naprawic?

I don't know if this will work for everyone but it worked for me. Try to find the ForniteClient-Win64-Shipping.exe in the game folder, I found it in EpicGames/Fortnite/FortniteGame/Binaries/Win64 (basically where you installed the game). Right click it, go to properties and just run it in compatibility mode for Windows 7. Hope this helps.

Lub 

Also worked for me, when i set the compatibility for both exe. 
ForniteClient-Win64-Shipping.exe AND FortniteClient-Win64-Shipping_BE.exe

Tu masz caly temat na tamtym forum: https://www.epicgames.com/fortnite/forums/bugs-issues/bug-reports/81787-fortniteclient-win64-shipping-exe-application-error

Może reinstal?