Fallout 4 mods not working/showing up on PC [Fixed]

Matthew Adams
by Matthew Adams
Windows & Software Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things surrounding it. He is passionate about... Read more
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Fallout 4 has a thriving modding community that releases new mods for that game. These mods alter the game in various ways.

For example, when downloading mods that enhance visuals or add new features to Fallout 4, in some cases, the mods don’t work or show up in the game.

Why are my Fallout 4 mods not working?

Fallout 4 mods won’t work if you haven’t configured certain INI files for the game as required.

The Windows firewall or antivirus utility might be blocking Fallout 4 or its mods manager. Or the mods manager for Fallout 4 might not have admin privileges.

Faulty (corrupted) or outdated mods can also stop other mods from working.

General issues with the game will arise when there are faulty mods. For example, Fallout 4 might crash with regularity or, in the worst case, not start at all because of broken mods.

How can I get Fallout 4 mods to work on PC?

1. Run Nexus Mod Manager (or Vortex) as administrator

  1. First, open the folder that includes your Nexus Mod Manager (or Vortex modding software) for Fallout 4.
  2. Right-click the EXE file for your Fallout 4 mod software and select Properties.
  3. Then select the Compatibility tab shown in the screenshot directly below.
    Compatibility tab fallout 4 mods not working pc
  4. Select the Run this program as administrator setting, and click the Apply option.
  5. Click OK to exit the properties window.

2. Configure INI files for Fallout 4 modding

  1. First, press the Windows + E hotkey to open File Explorer.
  2. Then open the Fallout 4 folder at this path: Documents\MyGames\Fallout4
  3. Right-click the Fallout4Custom.ini file and select Open with.
    Open with option fallout 4 mods not working pc
  4. Click Notepad to open Fallout4Custom.ini with that text editor.
  5. Copy the following code with the Ctrl + C hotkey:
    [Archive]
    bInvalidateOlderFiles=1
    sResourceDataDirsFinal=
  6. Paste that code into your Fallout4Custom.ini file with the Ctrl + V hotkey.
    The additional Fallout4Custom.ini lines fallout 4 mods not working pc
  7. Click File > Save in Notepad.
  8. Right-click the Fallout4Custom.ini file and select Properties to open the General tab shown directly below.
    The Read-only option fallout 4 mods not working pc
  9. Uncheck the Read-only attribute checkbox there.
  10. Right-click Fallout4Prefs.ini within the same Fallout 4 folder and select Open with to open the file within Notepad.
  11. Enter this line under [Launcher] within the Fallout4Prefs.ini file: bEnableFileSelection=1
  12. Then select the Save option on Notepad’s File menu.

Note: If your Fallout 4 folder doesn’t include a Fallout4Custom.ini file, set up a new file for that folder by clicking File > Save as in Notepad. Select All Files on the Save as type drop-down menu. Then enter Fallout4Custom.ini in the file title box, and press the Save button.


3. Enable Fallout 4 through Windows Defender Firewall

  1. Press the Type here to search button on the far left of Windows 10’s taskbar.
  2. Enter firewall as the search keyword.
  3. Click Windows Defender Firewall to open that Control Panel applet.
    The Windows Defender Firewall applet fallout 4 mods not working pc
  4. Click the Allow an app or feature through Windows Defender Firewall to open the window shown directly below.
    Allowed apps window fallout 4 mods not working pc
  5. Press the Change settings button.
  6. Then select both the Public and Private checkboxes for Fallout 4 and Nexus Mod Manager (or Vortex if you use that).
  7. Select the OK button.

Note: If you can’t find Fallout 4 and your mod manager listed within Allowed apps, click the Allow another app option. Then you can press the Browse button to select and add the Fallout 4 and mod manager apps to the list.


4. Add a Fallout 4 exclusion to Windows Security

  1. Open your Windows search box.
  2. Type Windows Security in the search utility’s text box and open it.
    The Windows Security utility fallout 4 mods not working pc
  3. Click the Virus and threat shield button on the left side of Windows Security.
  4. Click Manage settings to open the options in the shot directly below.
    The Real-time protection option fallout 4 mods not working pc
  5. Scroll down and click Add or remove exclusions.
  6. Press the + Add an exclusion button.
    Add an exclusion button fallout 4 mods not working pc
  7. Then click the Folder option, and select the Fallout 4 directory.
  8. Press the Select Folder button.

5. Disable and Re-enable mods one at a time

  1. Open the Nexus Mod Manager window.
    Nexus Mod Manager fallout 4 mods not working pc
  2. Then select Fallout 4 in Nexus Mod Manager to open a list of its installed mods.
  3. Disable all your mods by right-clicking them and selecting their Deactivate options.
  4. Play Fallout 4 after deactivating all the mods. If deactivating the mods fixed previous issues for the game, at least one of the mods is faulty.
  5. Thereafter, active a mod; and play Fallout 4 after activating it to check for issues. Keep on testing the game after reactivating one mod at a time until you can identify a faulty one.
  6. Deactivate the corrupted mod you discover.

6. Reinstall Nexus Mod Manager to update it

  1. To open the Run accessory, press the Windows and R keys simultaneously.
  2. Click the OK button after entering this command in Run’s text box: appwiz.cpl
  3. Select your Fallout 4 mod software, and click the Uninstall button.
    The Programs and Features applet fallout 4 mods not working pc
  4. Restart Windows after removing the mod software.
  5. Click the Manual Download button for the latest Nexus Mod Manager version on the NMM download page.
  6. Alternatively, you can click the Download button on the Vortex page to save the setup wizard for that Fallout4 mod software.
  7. Install the mod manager software you downloaded.

Note: Make sure you reinstall the mod manager software on the same hard drive as the Fallout 4 game.

There’s a pretty good chance the resolutions above will fix Fallout 4 mods not working. However, you can click the Submit A Ticket button on Bethesda’s support page if you still need more potential resolutions for Fallout 4 mods not showing up.

Highlights section

When Fallout 4 mods are not working on PCs, INI files for Fallout4 might not have been configured as required, there might a corrupted mod, or the Windows firewall or antivirus utility might be blocking Fallout 4 and its modding software.

Adjusting properties settings for Fallout 4 might fix Fallout 4 mods not appearing in game.

Windows antivirus utility and firewall exceptions can feasibly fix Fallout 4 texture mods not working and other modding issues for that game.

Editing certain configuration files can also fix Fallout 4 mods not showing up.

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