Open your web browser and download the new version from here.

Now you will be opening the File Explorer in the Fallout 4 installation path.

In the Properties window, you need to navigate to the Local Files tab and there click on the button Browse Local Files.

Once there, right-click on Fallout 4 and in the menu select Properties.

Open the Steam client and there navigate to the menu Library and then click on Games.

One easy fix this issue is reinstalling the addon on your game following these steps: If the problem has appeared after some update on Steam or new software installation, maybe Fallout 4 scrip extender is not working because there are some corrupted or missing files in the installation. Hopefully, after it finishes, you will be able to launch the game with script extender correctly.

The utility will start automatically to look for problems in your computer and the scrip extender.

Now, navigate to the Compatibility tab and there click on the button Run compatibility troubleshooter.

Once you are in the folder, you need to find and right-click on the file f4se_loader.exe and in the menu, click on Properties.

That means navigate where you installed the Fallout 4 Script Extender.

To run this compatibility utility, you first need to open the File Explorer and there navigate to the game installation path.

When you have a problem with the script extender on Fallout 4, you can try to use a built-in utility that will help you to look for any problem and apply specific settings and configurations to your system to be able to run the F4SE loader properly. If you have a problem to run the game with the Script Extender, you can follow the solutions that I will leave you below one by one. How to Fix Fallout 4 Script Extender not WorkingĪlthough the installation is simple as downloading and unzipping the files on your Fallout 4 folder, other factors could prevent you from launching the game with your favorite mods.

Although there aren’t too many mods that need this addon installed on Fallout 4, some of the coolest mods need it. Fallout 4 Script Extender is an addon for the game that will let you add some mods that modify internal files and codes of the game.