First off, big thanks to u/LadyWithGun on Reddit for bringing this solution to our attention!
Resolving the HoYoPlay Epic Games Launcher Issue on PC
The HoYoPlay launcher can attempt to auto-detect HoYoverse games already installed on your PC, or you can manually search a particular folder if you know where your games are installed. However, the issue occurs when a HoYoverse game installed via the Epic Games Launcher can’t be detected by HoYoPlay, even if you point it at the folder where the app is installed on your PC.
If this happens, though, you can do the following to fix it:
- Open HoYoPlay, go to All Games, and select the game you want to link up to the new launcher.
- Select “Get”, as if you are about to install the game afresh.
- When given the opportunity to select an installation location, find the folder where the game you’re looking for is already installed. The location will probably be something like:
“C:\Program Files\Epic Games\GenshinImpact\Genshin Impact game” (for example) — just make sure you get the folder where the application itself can be found. - Proceed with the installation with this as your location and HoYoPlay will instead begin to verify the pre-existing application, at which point you should see the game added to your list down the left-hand side of the launcher. Once verification is complete, you can launch the game from within HoYoPlay.
Note: This method has been confirmed to work for adding Epic Games installations of both Genshin Impact and Honkai: Star Rail to the HoYoPlay launcher, and will presumably work the same for Honkai Impact 3rd once that’s integrated into the new launcher as well.