Step 1: Click on the Dismiss button to close the current instance of Epic Games Launcher. Here’s how you can run the Epic Games Launcher as an administrator on your Windows PC: One of the easiest methods that can be employed to fix the self-update failed error includes running the Epic Games Launcher as an administrator. Run the Epic Games Launcher as an Administrator Do you get the same error often? Here are the fixes for the ‘necessary prerequisites have failed to install’ error when installing the Epic Games Launcher on Windows. The error specifically hints at needing specific files and libraries pre-installed to ensure the game runs on your Windows PC. However, several users face the ‘Necessary prerequisites failed to install’ error while attempting to install games using the Epic Games Launcher. After creating an account, you may buy or claim free games and download them on your computer. After Steam, Epic Games Launcher is the go-to destination for digital games, and you may get some for free.