How To Fix ‘Serialization Error Action Needed’ in Ready or Not

*Ready or Not* may sound like a simple children's game, but this intense SWAT-themed first-person shooter is anything but child's play. Whether you're diving into single-player or multiplayer action, you might encounter the occasional technical hiccup. Here's a comprehensive guide on how to resolve the "Serialization Error Action Needed" in *Ready or Not*.

How to Tackle 'Serialization Error Action Needed' in Ready or Not

1. Verify Your Installation

The first step is to follow the prompt and verify your game installation. Here’s how you can do it on Steam, ensuring you're not in offline mode:

• Go to your Steam Library and find *Ready or Not.*
• Right-click on the game and select "Properties."
• Navigate to "Installed Files."
• Click on "Verify Integrity of Game Files."

This process checks for any missing or corrupted files and re-downloads them if necessary. After verification, relaunch *Ready or Not* to see if the issue is resolved. If the problem persists, you might need to take further action.

2. Remove Any Mods

The "Serialization Error Action Needed" can also be triggered by outdated or broken mods, especially those not updated for Unreal Engine 5. To remove mods, follow these steps (as suggested by CosmoCart):

• From your Steam Library, locate *Ready or Not.*
• Left-click on "Manage" and then "Browse Local Files."
• Open the "ReadyorNot" folder, then the "Content" folder, and finally the "Paks" folder.
• Delete the "mod.io" folder.

Deleting the mod folder should allow the game to run, although you'll need to proceed without your mods initially.

Related: Ready or Not: What’s Better, DirectX 11 or DirectX 12 (DX11 vs. DX12)?

3. Reinstall Your Mods

Once you've cleared the mods, you can start reinstalling them one at a time. Visit Nexus Mods, Mod.io, or your preferred modding platform to find the mod pages:

• Check the update date of each mod. Ensure it has been updated post-July 2024, when *Ready or Not* transitioned to Unreal Engine 5.
• Install a mod, then launch the game to test if the error reoccurs.
• If the error returns, the last mod installed is likely the culprit. Unfortunately, if a mod hasn't been updated for UE5, you won't be able to use it.

As a last resort, consider uninstalling and reinstalling *Ready or Not* from scratch. While it's possible that your hard drive might be corrupted, most instances of this error are linked to outdated mods.

And that's how you can fix the "Serialization Error Action Needed" in *Ready or Not*. Enjoy your enhanced gameplay experience!

*Ready or Not is available now for PC.*