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How to Set a Join Password on a Project Zomboid Server

SERVER SETTINGS

By setting a join password on your Project Zomboid server, only those who know the password will be able to join. Simply enter the setting in the game panel field and restart.

v2.0 (Revised October 2026) BESTNET LLC Reading time: approx. 4 min

Revision History

v2.0
October 2026 — Complete revision. Changed from direct editing of configuration files to configuration via [SERVER] Join Password on the Startup tab
v1.0
Initial version

About This Guide

The join password is a password that everyone enters in common when joining the server. If you set one, even those who know the connection address (IP and port number) cannot join without the password.

Even with the setting not to list on the public server list (default state), those who know the connection address can join. If you want to play only with people you know, please set a join password.

Set a Join Password

  1. Open your server in the game panel and open the Startup tab.
  2. Enter the password you wish to set in the [SERVER] Join Password field.
  3. Restart the server from the Console tab.
The [SERVER] Join Password field on the Startup tab
Enter it in [SERVER] Join Password
The entered value takes effect when the server restarts. Entering it while the server is running will not apply the change immediately.

Once the restart is complete, confirm in the connection information displayed in the console that the 参加パスワード (Join password) field shows あり (Yes). You can also check the same field in 接続情報.txt (connection info) in the Files tab.

Operations for Joining Players

When joining players register the server in the game, they should enter the same password in the "Server password:" field.

If the password is incorrect, the game will display "Server password is incorrect". Please also note that passwords are case-sensitive.

For the complete connection process, please refer to Project Zomboid - Initial Setup.

Removing the Password

  1. Clear the [SERVER] Join Password field in the Startup tab.
  2. Restart the server from the Console tab.

After restarting, if the 参加パスワード (Join password) field in the console shows なし (No), the server is now accessible without a password.

Notes

Direct edits to the configuration file will be reverted

Even if you directly edit Password= in the configuration file (Zomboid/Server/<保存名>.ini), it will be overwritten by the Startup tab values each time the server starts. Always set the join password in the Startup tab.

The 3 passwords are different

NamePurposeWhere to set
Join PasswordEveryone enters this to join the server[SERVER] Join Password in the Startup tab
Admin PasswordUsed to join the server as an administratorAutomatically generated for each server and displayed in the console
Account PasswordEach player's individual account password for that serverSet by each player themselves when joining for the first time
The game screen displays: "Prevents others from using your account username. Do not use important passwords." Avoid using passwords you use for other services.

About sharing passwords

Share the join password with those you play with using a secure method. Please handle with care as the admin password displayed in the console is also visible to those who have access to the game panel.

To Game Panel →

If you need assistance, please contact us via support ticket.
© BESTNET LLC. All rights reserved. — Project Zomboid is a trademark of The Indie Stone.

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