If there are any outstanding updates, make sure to download them.
Delete the Manifests folder or better yet the EpicGamesLauncher folder from the Program data folder usually found here C:\ProgramData\Epic\EpicGamesLauncher\.
Uninstall the Epic Games launcher from your system and download the latest copy from the Official Unreal Engine website here. This tutorial is about how to fix preparing the epic games launcher takes forever to load or won't open problem.If you doesn't fix this not launching issue,y. The first step is to identify which graphics card you have. The Working Solution to Preparing the epic games launcher. These drivers contain essential updates and bug fixes necessary to run the latest games and software, Dauntless included.
Since you purchased or built your PC, your graphics card may have updated its drivers. If this happens, please try the following steps: If you are receiving an error that references Cooked/Uncooked content or a Global Shader error, this is usually indicative of out-of-date drivers not cooperating with Dauntless.