project zomboid host must allow you to join

2 min read 10-03-2025

project zomboid host must allow you to join

Project Zomboid's multiplayer can be a blast, but sometimes you run into frustrating connection issues. One common problem is the dreaded "Host must allow you to join" message. This article will troubleshoot this error, helping you get back to surviving the zombie apocalypse with your friends.

Understanding the "Host Must Allow You to Join" Error

The "Host must allow you to join" error in Project Zomboid means exactly what it says: the game server, hosted by your friend, isn't configured to accept your connection request. This isn't necessarily a problem on your end; it's entirely dependent on the host's settings.

Several factors can cause this issue:

Server Settings: The most common reason. The host might have accidentally disabled multiplayer or restricted access.
Firewall/Antivirus: Firewalls or antivirus software on either the host's or your machine could be blocking the necessary network ports.
Network Configuration: Incorrect network settings, like a misconfigured router, can prevent connections.
Mod Mismatch: Different mods installed between the host and client can also cause this error.

Troubleshooting Steps: What to Check

Let's tackle these potential problems one by one. This process involves checking both the host's and the client's (your) configurations.

1. Verify Host's Multiplayer Settings

This is the first and most important step. Have the host check their in-game settings:

Multiplayer Enabled: Ensure the "Multiplayer" option is enabled in Project Zomboid's main menu before creating a game.
Password Protection: If a password is set, make sure you have the correct password. A simple typo can block access.
Maximum Players: The server might be full. Check if the maximum number of players is reached.
Server Visibility (if applicable): Some server hosting options allow for adjusting server visibility. Ensure it is visible to others.

2. Check Firewalls and Antivirus Software

Both the host and the client need to check their firewalls and antivirus programs:

Temporary Disable (Caution!): Temporarily disable your firewall and antivirus software to see if they are interfering. Remember to re-enable them afterward! This is a diagnostic step, not a permanent solution.
Add Exception/Rule: If disabling doesn't work, add Project Zomboid as an exception or rule in your firewall and antivirus settings. This allows the game to communicate freely through the network ports it uses.

3. Network Configuration: Ports and Router

Port Forwarding (Host): The host might need to configure port forwarding on their router. The specific ports required for Project Zomboid multiplayer vary, so consult the game's official documentation or community forums for the correct port numbers. This allows external players to connect to the host's game.
Direct Connect (if applicable): If the host is using a direct connection method (e.g., a local network), verify that both machines are on the same network and that network discovery is enabled.

4. Mod Compatibility

Identical Mods: Both the host and client must have the exact same mods installed and enabled. Any discrepancy can lead to connection problems.

Advanced Troubleshooting

If the above steps don't resolve the issue:

Restart Devices: Restart your computer, router, and modem. A simple reboot can sometimes resolve network hiccups.
Check Internet Connection: Verify both the host and client have stable internet connections with sufficient bandwidth.
Update Game and Drivers: Make sure both Project Zomboid and your network drivers are up-to-date.
Community Forums: Search the Project Zomboid community forums for similar issues. Other players may have encountered and resolved the same problem.

By systematically checking these points, you'll significantly improve your chances of resolving the "Host must allow you to join" error and enjoying a smooth Project Zomboid multiplayer experience. Remember to always prioritize security, and only temporarily disable firewalls and antivirus as part of troubleshooting.