Why am I getting the error "Please close ACE-BASE before launching" when starting Fortnite?
This error appears when Anti-Cheat Expert (ACE) is working in the background while you are launching Fortnite.
Anti-Cheat Expert (ACE) is not compatible with Fortnite and needs to be closed before starting the game.
Please follow the steps below to resolve the problem:
- Make sure to exit a game that might be using ACE before starting Fortnite.
- Perform a clean boot to load only essential programs: How do I create a clean boot for Fortnite?
- Locate the game that installed Anti-Cheat Expert and contact their support team for help turning off the service.