I can't launch UEFN after changing an external SSD drive.

Hi @masa_jpn007 ,
There are two ways to fix this
In Windows File Manager copy all the files from F:\EpicGamesLibrary\Fortnite to
F:\Program Files\Epic Games\Fortnite.

If this does not work
Get into the Epic Launcher find the file Unreal Engine Fortnite Right-click the three dots and click uninstall.

Come out of the Epic Launcher and Open Launcher by right-clicking “Run as Administrator”

Find the file Unreal Engine Fortnite and click install.
This the offers you a chance to install at F:\Program Files\Epic Games\Fortnite.
Change the C: for F: