Corrupt or missing files detected

Summary

Whenever I try to start UEFN it says “Corrupt or missing files detected. Do you want to verify your installation” and I press Yes but then another error appear: "Failed to open descriptor file ../../../FortniteGame/FortniteGame.uproject and then it proceed to endless “initializing” in the download manager

What Type of Bug are you experiencing?

AI

Steps to Reproduce

start UEFN it says “Corrupt or missing files detected. Do you want to verify your installation” and I press Yes but then another error appear: "Failed to open descriptor file ../../../FortniteGame/FortniteGame.uproject and then it proceed to endless “initializing” in the download manager

Expected Result

Start UEFN properly ?

Observed Result

Multiple reinstallation and verify multiple time UEFN, it does verify Fortnite and UEFN. Tried to delete the webcache, doesn’t do anything

Affects Versions

5.8

Platform(s)

Windows

Upload an image

Screenshot 2026-08-12 174749.png

For crash reports, include your callstack

LoginId:cd7728d7466f4a964753509e2544390e

Fatal error: [File:Z:\UEVFS\Root\Engine\Source\Runtime\Core\Private\Internationalization\ICUInternationalization.cpp] [Line: 161]
ICU data directory was not discovered:
../../../FortniteGame/Content/Internationalization
../../../Engine/Content/Internationalization

UnrealEditorFortnite_Engine_Win64_Shipping
UnrealEditorFortnite_Engine_Win64_Shipping
UnrealEditorFortnite_Engine_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
UnrealEditorFortnite_Win64_Shipping
kernel32
ntdll