Fallout 76 “Lookup Failed” error: Possible fixes, reasons, and more

The “Lookup Failed” error in Fallout 76 is a common performance issue encountered by players, especially when they are using mods for the game. The pop-up and a subsequent crash occur right after an update, and if the title detects mods in the installation directory. While the straightforward fix would be to remove all mods from the folder, that’s not something most players will look to do.

Fortunately, there are some community-found workarounds that you can try to resolve the issue. This Fallout 76 guide goes over some possible reasons and fixes for the “Lookup Failed” error in the MMO.

How to fix the “Lookup Failed” error in Fallout 76

LOOKUP FAILED on weapons and scoreboard byu/Nve07 info76

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Here are a few steps you can follow to deal with the “Lookup Failed” error in Fallout 76:

1) Delete the Strings folder

One of the more popular fixes to the problem is to delete the “Strings” folder found in the game’s Data folder. To find it, you will need to open the ‘Steamapps‘ folder and select the ‘common‘ file.

Navigate to ‘Fallout 76’ here, and open the ‘Data‘ folder. Here, you will find “Strings.” Delete it and relaunch the game. This will likely resolve the issue.

2) Update your mods

If the game was working fine for you even with all the installed mods, then it’s likely you will have to update all of the modifications that you have for the game.

If you have used NexusMods for Fallout 76, try using its desktop application to update all of the ones that you have installed.

3) Reinstall the game and your mods

If the issue persists, you might want to reinstall the game and all the mods that you have downloaded. Delete it through the client that you are playing the game on and re-install it. However, make sure that you install the mods one at a time.

The issue can likely occur because of just one modification. After installing each mod, run the game and see if you still get the “Lookup Failed” error.