The "Couldn't start the game" error in Fortnite is almost always caused by issues with , corrupted game files, or background software interference .
Select Repair Service from the menu and wait for it to finish. Fortnite Launch Error - Couldnt start game erro...
Here is a review of the most effective fixes as of April 2026: 1. Repair Easy Anti-Cheat (EAC) Most users find this to be the definitive fix. The "Couldn't start the game" error in Fortnite