How to Fix the “Lost Connection” Error on a Terraria Server

Note: The lost connection error in Terraria is one of the most common multiplayer connection issues. It typically occurs due to incorrect port numbers, network timeouts, mismatched server passwords, or game version conflicts.

1. Log In to Your Panel

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2. Verify Your Server Status

Check the server status badge in the top header of your dashboard to ensure your server is fully online and not stuck in a restart loop.

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3. Verify the Assigned Port Number

Check your server’s connection address to ensure players are connecting with your assigned port instead of Terraria’s default 7777 port.

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4. Select the ‘Console’ Tab

From the left navigation menu, select the ‘Console’ tab to open your server’s live terminal log.

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5. Inspect Console Logs for Network Drops

Review the live terminal logs to check for crash reports, player timeout messages, or port binding conflicts.

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6. Select the ‘Files’ Tab

From the left navigation menu, select the ‘Files’ tab to access your server’s root directory.

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7. Open the ‘serverconfig.txt’ File

In your server file manager, locate the ‘serverconfig.txt’ file and click on it to open it in the built-in editor.

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8. Verify the Server Password Setting

Inside the editor, inspect the ‘password=’ line to verify whether a server password is set and communicating correctly.

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9. Confirm Server Version in Startup Settings

Select the ‘Startup’ tab from the sidebar to verify that your Terraria server version matches the client game version players are running.

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10. Restart Your Server to Refresh Connections

Click the ‘Restart’ button in the header to refresh network sockets, clear memory cache, and restore player connectivity.

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