Fallout: London not launching? Crashing? Stuck on loading screen? — Troubleshooting Guide

Some players are encountering critical errors while testing the new global mod Fallout: London for Fallout 4. Although this modification was eagerly awaited by franchise fans, it is sad to see its launch marred by errors and other difficulties. In this guide, we will explain how to correctly install Fallout: London, which modifications may be necessary for the mod to work properly, and describe solutions to various technical issues.

The Fallout: London modification, originally announced in 2021, was developed by the non-commercial modding group FOLON. A few weeks ago, the team announced that Fallout: London would also be available on GOG, as its files were too large to be hosted on standard mod sites.

To ensure the mod works smoothly, without errors and crashes, follow these steps in order.

Fallout 4 and FOLON have very large installation files. Just downloading FOLON takes up 35 GB before installation, so it is recommended to clean up your disk to free up space on your hard drive. This step can be skipped if you have enough free space.

Note: We do not consider the installation of the modification using managers. Only manual installation.

Note: We recommend installing Fallout 4 GOTY from GOG for the Fallout: London mod, and the regular version of Fallout 4 from Steam. Additionally, you can manually back up the original game and the modification (Fallout: London weighs over 35 GB) to avoid downloading them again through the launcher.

Now you need to proceed with the downgrade of the main Fallout 4. To do this:

Next:

Additionally, the developers also recommend installing the following modifications (optional):

Installation is complete. Launch Fallout: London using the executable file f4se_loader.exe. In the dialog box, select Yes. You need to run the game once and exit it. Do not change settings through the in-game menu. If you need to change graphics and other parameters, do it through the configuration files, which we will discuss in the next section.

Navigate to the path C:\Users\USERNAME\Documents\My Games\Fallout4 and find the file Fallout.ini. Right-click and make sure the Read-only checkbox is unchecked. Copy the text under the spoiler, paste it into the file replacing the existing text, and save it. This is a recommendation from the FOLON mod development team.

Note: Using configurations, you can change some settings in the game.

To get sharper textures, use the following parameters (you can use your own settings):

To select the screen resolution:

Repeat the actions with the file fallout4prefs.ini from the same folder.

Fallout: London can crash for various reasons, but most players have reported issues after the train cutscene. In this section, we have compiled the main solutions if the modification does not start, crashes at launch, or freezes on the loading screen.

Disable Ambient Occlusion completely or do not select the HBAO option. Save the changes and try restarting the game to see if the issue is resolved.

We mentioned this method earlier, but if you have already installed Fallout: London, follow these steps:

These steps will help eliminate crashes and freezes that players have been reporting en masse recently, especially after the train cutscene.

Some players encounter the following error:

Here are some solutions to this problem:

The vast majority of gamers have found a simple way to deal with this issue: if you are stuck on the loading screen, use the ALT+TAB keyboard shortcut several times in a row. If this method does not work, you will need to reinstall the game as described in the first section of this guide.