I played Fortnite today and after a while I restarted my PC. Then I wanted to play about 30 minutes later but it was always only this message (see picture). I have reinstalled the epicgames launcher and connected another epicgames account. Everything futile. If you search on the Epicgames site for the error code you will find nothing. Also on YouTube is nothing to find.
Run the Verify function maybe it can be fixed that way.
How do I verify?
Go to the Epic Games Launcher / Library / Gear / and verify
That did not help me.