How to Fix Terraria Lost Connection Issue

Lost connection terraria

This article will show you all the possible solutions to fix the Terraria lost connection issue.

Verify the Integrity of Game Files via Steam

Do you keep getting the "Lost Connection" error in Terraria? If so, there's a quick and easy fix. All you need to do is verify the integrity of your game files via Steam.

To do this, right-click on Terraria in your Steam Library and select "Properties". Go to the "Local Files" tab and click "Verify Integrity of Game Files". Steam will now check your files and ensure they're all up-to-date and correct.

Once it's finished, try launching Terraria again. The "Lost Connection" error should now be fixed!

Make Sure the Game Is Updated

You may have trouble connecting to servers or playing with friends if the game is outdated.

To check whether the game is up to date, open the game and click on the "Options" button. Then, click on the "Check for Updates" button. If there is a new game version, it will be downloaded and installed automatically.

Update Your Drivers

There are a few things you can try to fix this issue. First, make sure you have the latest version of your drivers installed. You can do this by going to the manufacturer's website and downloading the latest drivers for your graphics card, sound card, and other hardware.

If that doesn't work, try uninstalling and then reinstalling your drivers. This will ensure that they're properly installed and working correctly.

Finally, if all else fails, you can try restarting your PC. Sometimes a simple restart can fix a variety of issues.

If you're still having trouble, you can try a few other things, but these are the most common fixes for a lost connection issue.

Configure and Enable Port Forwarding for Terraria

If you're trying to connect to a Terraria server and keep getting the "Terraria Lost Connection" error, you likely need to configure port forwarding for Terraria.

Port forwarding is opening specific ports on your router or firewall to allow communication from your computer to the Terraria server. By default, most routers and firewalls block all incoming and outgoing traffic unless it's specifically authorised.

To configure port forwarding for Terraria, you'll need to open the following ports:

Terraria Game Server Port: 7777

Terraria Steam Query Port: 27015

Windows Firewall

If you're using Windows Firewall, you'll need to add an exception for each port above. Here's how:

  1. Open Firewall by clicking the Start button, then clicking Control Panel.
  2. In the search box, type firewall, and then click Windows Firewall.
  3. On the left, click Allow a program or feature through Windows Firewall.
  4. Click the Change settings button.
  5. Under Program and Features, select the check box for the program you want to allow access to, then click OK.


If you're using a router, you'll need to configure port forwarding for the ports above. The process varies depending on your router, but you'll typically need to log in to your router's web interface and add a new port forwarding rule.

Once you've configured port forwarding for Terraria, you should be able to connect to servers without any issues.

Create a Journey Character

Make sure that you're running the game in Journey Mode. This mode is designed to be more stable and allow for better connection. If you're still having trouble, try creating a new character. This will frequently help fix the issue.

Disable the Antivirus and Windows Firewall

If you're a player, you know the frustration of losing connection in the middle of a game. It's even more frustrating when you don't know how to fix the issue.

First, disable your firewall or antivirus program. This can often interfere with gaming connections. If that doesn't work, try disabling your Windows firewall. If neither of those works, you may need to contact your ISP to see if there's an issue on their end.

With a little troubleshooting, you should be able to get back to your game in no time.

Use a Different DNS

One possible solution is to use a different DNS server. Your DNS server converts a website's domain name into an IP address. If your DNS server has issues, it can cause a connection timeout.

First, you need to figure out what your default gateway is. You can do this by opening the Command Prompt and typing "ipconfig." Look for the "Default Gateway" line and copy the number next to it.

Next, open your browser and type in your default gateway. This will take you to your router's settings page. From here, you can change your DNS settings.

If you're still having trouble, try changing your DNS to This is Google's public DNS and is a good option if you're unsure what else to try.

That's it! By following these steps, you should be able to fix the Terraria lost connection issue.

Reinstall the Game

If you are having trouble connecting to Terraria servers, it might be time to uninstall and reinstall the game. Here's a quick guide on how to do that:

First, uninstall the game from your computer. You can do this by going to the Control Panel, selecting "Add or Remove Programs," and finding Terraria in the list. Click "Uninstall" and follow the prompts.

Next, reinstall the game. Make sure you download the latest version from the official Terraria website. Once the download is finished, install the game and launch it.

Finally, check your firewall and antivirus settings. If they're blocking Terraria, you won't be able to connect to any servers. Add an exception for the game and try again.

With these steps, you should be able to fix the lost connection issue and get back to playing Terraria.

Other Solutions on How to Fix the Terraria Lost Connection Issue

Luckily, you can try a few methods to get back into the video game. The first thing you should do is check your router or modem. If the problem is with your connection, then restarting your device may fix the issue.

If that doesn't work, you can try opening your router's configuration page and looking for the "subnet mask." This is usually under the "LAN" or "Network" section. Once you find it, change the value to

If you're still having trouble, there are a few other ways to fix the Terraria lost connection issue. You can try opening your router's configuration page and looking for the "MTU" setting. Changing the MTU value to 1400 may help resolve the problem.

You can also try changing the game's server to a different one. If you're playing on a public server, try switching to a private server. Try changing to a shared server if you play on a private server.

Finally, if you're still having trouble, you can try changing the game's mode. If you're playing in "Hardcore" mode, try switching to "Softcore" mode. If you're playing in "Softcore" mode, try switching to "Hardcore" mode.

Hopefully, one of these methods will help you fix the Terraria lost connection issue.

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