Logo Viva New Vegas


Mod Organizer 2

In this step, we will install and configure Mod Organizer 2.


Installing Mod Organizer 2

  1. Download Mod Organizer 2 from here.
  2. Once the download has finished, right click the file and open its Properties.
  3. In the properties window, tick the Unblock checkbox under Security section.
  4. This operation is required because Windows can block MO2 files from loading.
    If you used the installer, this action is not needed as it handles it automatically.
  5. Extract the archive anywhere outside of the default Windows folders (like Program Files x86) and outside of the game's Root folder.
    Example install path: C:\Modding\MO2\Viva New Vegas
  6. It's discouraged to store MO2 on Desktop or Documents if you use OneDrive or similar cloud providers, due to potential issues and degraded performance.

Configuring Mod Organizer 2

  1. Run ModOrganizer.exe inside the Mod Organizer 2 folder you extracted before.
  2. You will be prompted with a pop-up called Creating an instance, in which you should just select Next.
  3. Create a portable instance.
  4. Portable instance
  5. Select New Vegas.
  6. Select the store where you bought the game.
  7. Enable both profile-specific options.
  8. Keep the default Location file path.
If you have MO2 installed on an SSD or a HDD with little space, you can check the Show advanced options box and change the Downloads file path to a different drive with more space. This will not effect download/game performance, and the downloads can be deleted after the mods have been installed.
  1. On the last page, select Finish.
  2. MO2 will launch and prompt you with Category Setup, select Do Nothing.
  3. If you see a pop-up called INI file is read-only, select Remember my choice from the drop-down at the bottom then click Clear the read-only flag.
  4. If you see a pop-up called Register?, select Yes.

Adding Exceptions to Defender

  1. Open Windows Security.
  2. Open Virus & threat protection.
  3. Click Manage settings under Virus & threat protection settings.
  4. Scroll down and click Add or remove exclusions under Exclusions.
  5. Add a Folder exclusion and point it to the folder Mod Organizer 2 is in.
  6. Add another exclusion for your game folder (the game's root folder, not documents).
This operation is required because Windows can block MO2 and mod files from loading due to how MO2's virtualized filesystem works.
If you used the installer, this action is not needed as it handles it automatically.

If you are using a third-party antivirus, you will need to find the exceptions menu and add those 2 folders mentioned previously.

Setting Up Plugins

  1. Once Mod Organizer 2 has loaded, right-click in the right pane and select Enable all.
  2. Order the plugins in the right pane as follows:
  3. Order of DLCs
  4. If there is a plugin called FalloutNV_lang.esp in the right pane, navigate to the game's Data folder and delete it.
    • If you do not know what the game's Data folder is, read the Key Terminology section from the Setup page.
The translation plugin must be deleted because it directly edits thousands of records to change the language, which will cause many incompatibilities with most mods. Because of conflicts like this, the guide unfortunately only supports the English version of the game.

Configuring Settings

  1. Select the X in the bottom right of MO2 to close the log window.
  2. Select the MO2 settings button at the top of MO2 to open the settings.
  3. In the Theme tab, you can select a different style of your choosing from the drop-down menu at the top.
  4. In the Nexus tab, select Connect to Nexus.
  5. Connect to Nexus
    • This option will not show up if you have already connected your Nexus account on a different MO2 instance.
  6. MO2 will open your browser and prompt you to authorize the connection.
  7. Once you authorize it, you can close out of your browser and of the MO2 settings.
  8. Allow MO2 to restart.

Mod Installation Instructions

When the guide says to install a mod, it will be formatted as follows: Main File - Example 1.5. This is referring to the mod's category on Nexus and file name.
The guide will list a mod's specific file name, category and version if you need to do more than just download the latest main file.

Download example

Standard mod installation procedure:
  1. Unless instructed otherwise by the guide, download a mod's latest main file using the Mod Manager Download button.
  2. Once the download has finished, open Downloads tab in MO2 (right pane, below executable selector).
  3. Double-click on the mod to install it.
  4. Enable the mod on the left pane.
Sometimes, a mod will not have a Mod Manager Download, or will be hosted on a site other than Nexus.
If that is the case, do the following:
  1. Click the Manual Download button (or whatever the download button is for the respective site).
  2. Once the download has finished, click the MO2 archive button button at the top of MO2.
  3. From the new window, navigate to where the file was downloaded to and double-click it.
  4. Finish the install as you would with a Mod Manager Download mod.
When downloading multiple files from the same page, you will be prompted with a box in Mod Organizer 2 with the options Merge, Replace and Rename.