How to Resolve Path of Exile 2 Unknown Object Type Serialized by Server Error

The recent major content update for Path of Exile 2 has sparked considerable discontent among players. Despite introducing new gameplay features and mechanics, the update has unfortunately resurrected several old bugs and technical challenges that were previously resolved.

Grinding Gear Games is actively releasing hotfixes aimed at remedying these issues. Yet, many players continue to encounter the frustrating “Unknown Object Type Serialized by Server“error. If you’re facing this issue, there are several troubleshooting steps you can take to get back into the game smoothly.

How to Resolve the Unknown Object Type Serialized by Server Error

The “Unknown Object Type Serialized by Server“error has been acknowledged by the developers in their 0.2.0 Hotfix 3. Given that there have been subsequent updates, it’s crucial to ensure that your game is running on the latest version available.

Path of Exile 2 Hotfix Image — Screenshot provided by Prima Games

If the error persists, try the following methods to troubleshoot:

Step 1: Verify Game Files

Steam users often face issues stemming from incomplete or corrupted game files following updates. Therefore, it’s wise to verify the integrity of your game files after each patch. Here’s how:

Open Steam and go to your Library.
Right-click on Path of Exile 2 and select Properties.
Navigate to the Installed Files tab and click on Verify integrity of game files.

Verifying Game Files in Path of Exile 2 — Screenshot by Prima Games

Step 2: Update Your Game

To ensure you’re equipped with the latest bug fixes and stability improvements, consider prioritizing updates for Path of Exile 2 in Steam:

Open Steam and navigate to your Library.
Right-click on Path of Exile 2 and go to Properties.
In the Updates tab, switch to High Priority for automatic updates.

Path of Exile 2 Update Priority — Screenshot by Prima Games

Step 3: Generic Troubleshooting Methods

If the problem persists, consider the following general troubleshooting measures:

Ensure you are using the latest versions of DirectX and Visual C++ Redistributables.
Switch to your dedicated graphics card if you are using a laptop.
Update your GPU Drivers from NVIDIA, AMD, or Intel.
Add the game’s installation folder to your antivirus exceptions list.
Update your BIOS, particularly if you have a 13th or 14th-generation Intel processor.
Verify that your Windows date and time settings are accurate.
Ensure Windows is updated to the latest version (1909 or higher).

This error primarily stems from server-side issues, limiting the actions players can take. However, following the suggestions above might help you regain functionality. Although the issue seems resolved for now, it has the potential to arise again, reminiscent of previous experiences with the original Path of Exile.

Additionally, if you’re experiencing lower than average FPS in the new update, there are further performance optimization tips available to enhance your gaming experience.

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