Din's Champion: Fix Multiplayer and Desync

fix By GuideLVL · Published August 24, 2026

If a co-op session in Din’s Champion will not start, or the world drifts out of sync between players, this page walks through the fixes in the order worth trying them. You are done when everyone can see the host’s game, join it, and see the same world as each other.

The short version:

1. Before you start, host on the machine with the fastest processor.
2. Make sure everyone picked the same Master server zone.
3. Make sure everyone is on exactly the same game version, with no mods and no edited game files.
4. Allow the game through every firewall on both ends.
5. Forward ports 26503 to 26510 on the host’s router, and on the clients’ routers too.
6. If none of that works, join the host by IP address with direct connect.

Choose the right host

Before anyone starts a game, compare processors and hand hosting to whoever has the fastest one, even if that is not the person who normally hosts. Hosting asks more of a machine than joining does.

Match your Master server zone

Two players in different Master server zones will not find each other over the internet, no matter how healthy the connection is. Everyone needs the same zone selected before the host’s game will show up.

As of the launch build the zone selector sits at the bottom centre of the multiplayer menu.

Check everyone is on the same game version

Mismatched versions are what to suspect when the game connects but then misbehaves: maps that do not match, monsters in different places, players seeing different states of the same world.

In the launch build the version number is printed at the bottom centre of the main menu. Have every player read theirs out and compare before you start blaming the network.

Check nobody has modified the game files

The same out-of-sync symptoms come from edited files. Everyone in the session needs an untouched install: no mods, and nothing changed inside the game’s Assets folder, which lives at steamapps\common\Din's Champion\Assets in your Steam library.

Allow the game through your firewall

A firewall blocking the game will stop a lobby from being visible or joinable. Allow it through on the host machine and on every joining machine.

On Windows:

1. Open Windows Defender Firewall.
2. Find the option for allowing an app or feature through the firewall. The exact wording changes between Windows versions.
3. Add Din’s Champion to the allowed list.

If you run a different firewall or a security suite, add the game there as well.

One thing not to do: never switch the firewall off entirely while you are online. Adding one allowed app is much safer and fixes the same problem.

Forward the ports the game uses

Din’s Champion may need specific ports opened on your router before it can connect. Try this if you cannot see a server in the list, cannot join one, or nobody can connect to the game you are hosting.

As of the launch build the game uses ports 26503 to 26510:

Forward the whole range as a block and do not worry about which port is which.

Both the host and every client need the ports forwarded, not just the host.

Router interfaces differ far too much for one set of steps to cover them. Check your router’s own manual, or look up a port forwarding walkthrough for your exact model. A walkthrough written for another game will do: follow its steps and put in the port numbers above.

When you are done, restart the router if it does not restart itself.

Direct connect over the internet

If nothing above gets you into a game, skip the server list and connect straight to the host.

1. The host starts a multiplayer game.
2. The host finds their public IP address by searching “what is my IP” in a browser. Plenty of sites will show it.
3. The host passes that address to the other players.
4. Each joining player uses direct connect with the host’s public IP address.

Direct connect on a local network

If everyone is on the same network, such as one home Wi-Fi, use the host’s local IP address instead of the public one. Local addresses usually start with 192.168, and can also start with 10.0 or 172.16.

To find it on Windows:

1. Open Command Prompt.
2. Run ipconfig.
3. Read the IPv4 address listed for the network adapter you are actually using.

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