Fortnite not working after update for Season 5
Solution 1:
3 methods I have used to solve this problem are
- Run as admin (right click -> run as admin)
- Restart your pc as occasionally files get locked by other processes and restarting can fix this.
- Reinstall the program. Occasionally the update gets messed up for a variety of reasons, and the only way to fix is reinstalling the app or running a repair tool if they have one.