Why aren’t my Fallout 4 mods working?

Fallout 4’s mods will not work if you have not properly configured certain INI files for the game.

It may be that the Windows firewall or antivirus is blocking Fallout 4 or the mode manager. Or Fallout 4’s mod manager may not have administrator rights.

Faulty (corrupt) or outdated mods can also prevent other mods from working.

General game problems occur when faulty mods are present. For example, Fallout 4 can routinely crash due to faulty mods, or in the worst case, not boot at all.

How do I get the mods of Fallout 4 working on the PC?

Start the Nexus Mod Manager (or Vortex) as an administrator.

  1. First, open the folder with the Nexus mod manager (or Vortex modding program) for Fallout 4.
  2. Right-click on the EXE file for your Fallout 4 mod software and select Properties.
  3. Then select the “Compatibility” tab, as shown in the following screenshot.
    Error: The file name is not specified.
  4. Select “Run this program as administrator” and click “Apply”.
  5. Click OK to close the properties window.

2. Configure the INI files for Fallout 4 changes.

  1. First, press the Windows + E key combination to open the file explorer.
  2. Then open the Fallout 4 folder in this path: DocumentsMy GamesFallout4 folder.
  3. Right click on the file “Fallout4Custom.ini” and select “Open with”.
    Error: The file name is not specified.
  4. Click Notepad to open the Fallout4Custom.ini file with this text editor.
  5. Copy the following code using the key combination Ctrl + C:
    [Archive].
    bInvalidateOlderFiles=1
    sResourceDataDirsFinal=
  6. Paste this code into your Fallout4Custom.ini file with the Ctrl + V key combination.
    Error: The filename is not specified.
  7. Click File > Save to Notepad.
  8. Right click on the “Fallout4Custom.ini” file and select “Properties” to open the “General” tab.
    Error: The file name is not specified.
  9. Disable the read-only attribute.
  10. Right-click “Fallout4Prefs.ini” in the same folder as Fallout 4 and select “Open With” to open the file in Notepad.
  11. Enter this line under [Launcher] in the Fallout4Prefs.ini file: bEnableFileSelection=1
  12. Then select “Save” from the “File” menu in Notepad.

Note: If the Fallout 4 folder does not contain the Fallout4Custom.ini file, create a new file for this folder by clicking File > Save As in Notepad. Select “All Files” from the “File Type” drop-down list. Then type Fallout4Custom.ini in the file title field and click Save.

3. Enable Fallout 4 through the Windows Defender Firewall

  1. Here, click the “Tap” button to search the top left corner of the Windows 10 taskbar.
  2. Enter Firewall as a search term.
  3. Click Windows Defender Firewall to open this section of the Control Panel.
    Error: The file name is not specified.
  4. Click Allow the application or feature through the Windows Defender Firewall to open the window below.
    Error: The file name is not specified.
  5. Click the Change Settings button.
  6. Then check the “Public” and “Private” boxes for Fallout 4 and Nexus Mod Manager (or Vortex if you use it).
  7. Press the OK key.

Perform a system check for possible errors

Error: The file name is not specified.

Click the Start Scan button to detect problems with Windows.

Error: The file name is not specified.

Click Fix All to correct problems related to proprietary technologies.

Run a scan of the PC with Restoro Repair Tool to find errors that cause security problems and delays. Once the scan is complete, the repair process replaces damaged files with new Windows files and components.

Note: If you cannot find Fallout 4 and your mod manager in the list of allowed applications, select the “Allow another application” option. You can then click the Browse button to select Fallout 4 and your mod manager to add to the list.

4. Exception Fallout 4 added to Windows security

  1. Open the Windows search window.
  2. Type Windows Security in the Search Utility text box and open it.
    Error: The file name is not specified.
  3. Click the Virus and Threat Protection button on the left side of Windows Security.
  4. Click on “Manage Settings” to access the photo’s options directly below.
    Error: The file name is not specified.
  5. Scroll down and click Add or Remove Exclusions.
  6. Click the + Add Exception button.
    Error: The file name is not specified.
  7. Then choose the “Map” option and select the “Fallout 4” folder.
  8. Click on the “Select Folder” button.

Disconnect and reconnect the mods one by one.

  1. Open the Nexus Mod Manager window.
    Error: The file name is not specified.
  2. Then select Fallout 4 in the Nexus Module Manager to open a list of installed modules.
  3. Disable all your mods by right-clicking on them and selecting Disable.
  4. Play Fallout 4 after you have disabled all mods. If disabling the mods fixed previous problems in the game, then at least one of the mods is broken.
  5. Then activate the mod; and after activation, play Fallout 4 to check for problems. Continue testing the game after reactivating one mod at a time until you can determine the problem.
  6. Disable the damaged mod you found.

6. Reinstall the Nexus Mod Manager to update it.

  1. To open the Run program, press the Windows and R keys simultaneously.
  2. Click OK after typing this command in the Run text box: appwiz.cpl.
  3. Select the Fallout 4 mod software and click the Uninstall button.
    Error: The file name is not specified.
  4. Restart Windows after removing the defective software.
  5. Click on “Manual download” to get the latest version of Nexus Mod Manager on the NMM download page.
  6. You can also click the “Download” button on the Vortex page to save the main configuration of this Fallout4 mod program.
  7. Install the management software of the downloaded mod.

Note: Be sure to reinstall the Mod Manager program on the same hard drive as the Fallout 4 game.

Chances are, the above permissions will fix Fallout 4’s non-functional mods. However, you can click the “Submit Ticket” button on the Bethesda support page if you still need more potential permissions for Fallout 4 mods that don’t appear.

Highlights” section

Frequently asked questions

Why aren’t my Fallout 4 mods working?

Defective mods: in some cases, some mods applied by users were outdated or corrupt and caused problems when applying the mods. This can happen if the version numbers of the mods are very old and have not been updated to work with the latest version of Nexus Mod Manager.

How do I activate mods in Fallout 4 PC?

Installing Fallout 4 Mods – Wiki Nexus Mods

How do I know if my mods will work in Fallout 4?

Check your Steam/startup/standard/chute/data programs. If you have a bunch of files named Wasteland512, like . bsa, at least you have them installed in the right place. Then make sure you have active plugins in NMM/Data Files/everything you use to manage your mods.

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