update UEFN, click open, error screen shows up
press yes = verifying starts but ends up with the same screen when opening again
press no = epic launcher screen shows up again
Full reinstall, it that doesnt work youll need to go into the folder itself and remove the files.
Hello there!
That looks like a corrupted install, meaning a full reinstall might not be enough to completely clear everything. You will need to remove the associated registry entries. Please follow these steps to do so:
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First, uninstall UEFN, the launcher, UE or any asset packs if you have them, etc
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Next, open the registry directory, both at HKEY_CURRENT_USER\Software\Epic Games and HKEY_CURRENT_USER\Software\Unreal Engine, then delete any entries tied to “UnrealEditorFortnite”
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Finally, go to your local app data, and delete all folders from %userprofile%\AppData\Local\UnrealEditorFortnite, %userprofile%\AppData\Local\UnrealEngine and %userprofile%\AppData\Local\UnrealHeaderTool
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After that, no Epic elements should be left in your system
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Now, reinstall the launcher from scratch, then download UEFN
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Once the process is complete, test opening a new island