How to Fix the ‘Failed To Download Map From Server’ Error on Your Project Zomboid Server

1. Download the WorldStreamer.class File

The WorldStreamer.class file is part of the game engine and is responsible for transmitting the map between your computer and the server.

This modified version removes the 60 second limitation for downloading the map from the server.


2. Open Your File Explorer

File explorer interface

2.1. Locate the ‘iso’ Folder

You can find the folder in  \Program Files (x86)\Steam\steamapps\common\ProjectZomboid\zombie\iso.

Location of the iso folder in the file explorer

3. Move the ‘WorldStreamer.class’ File You Downloaded to the ‘Iso’ Folder

Replacing the worldstreamer.class file in the iso folder

3.1. Select ‘Replace the File in the Destination’

File replacement confirmation pop-up window

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