Can’t join your world? We’ve all been there. Usually, it's just a tiny mismatch in settings between your game and the server. Let’s walk through the most common fixes so you can get back to building.

1. "Timed Out" or "Connection Refused"

This basically means your game can't "see" the server.

Is it actually on?: Double-check Mission Control. If the card isn't green (Running), nothing will happen.
The "60 Second" Rule: Sometimes the dashboard says "Running" before the Java process is actually ready for players. Give it a minute.
Typo Check: Make sure you didn't accidentally include http:// or any hidden spaces when you pasted the address.

2. "Authentication Servers are Down"

This one isn't your fault (or ours). This means Mojang's login system is having a bad day.

You can check the Mojang Status on X.
The Risky Fix: If you trust everyone in your community, you can set online-mode=false in your settings to bypass the check. Just know this disables skins and security.

3. "Mismatched mod channel list"

Modded servers (Forge/Fabric) are very pick about versions.

You Need an Exact Match: You must have the same mods AND the same versions as the server. Even a small update to one mod can break the connection.
Modpack Versions: If the server is on "Version 1.2" and you updated to "Version 1.3," you'll be kicked instantly.

4. Bedrock Edition: "Unable to connect to world"

The Port is Key: Unlike Java, Bedrock needs a specific port (usually 19132). If you leave this out or use the wrong one, you won't get in.
Geyser Check: If you're running a Java server but playing on Bedrock, make sure the Geyser plugin is installed and active.

Still stuck at the door? Try running a Ping Test in Mission Control to see if there's a weird routing issue between you and our data center.