10 Fixes For Terraria Lost Connection Issue

terraria lost connection

Since its launch in 2011, Terraria has been a hit among its ardent players who love exploring randomly created worlds in this action-packed sandbox video game. However, as nothing is perfect in this world, the same applies to Terraria. 

Besides its crazy gameplay and intuitive graphics, the game faces criticism for its Terraria lost connection bug or alert message, whatever you call it. 

The good news – this issue is easy to resolve, and there’s nothing much you need to do for the same. This article will discuss what Terraria lost connection means, its causes, and the ten best solutions. So, let’s start. 

Terraria Lost Connections – What Does It Imply? 

First, let’s understand the meaning behind the on-screen message – Terraria lost connection. This is a warning you might get while playing the game with other players or alone. This issue won’t be fixed until you try some of its dedicated fixes (discussed later.) 

The main issue is that when you receive this warning, it won’t tell you why it occurs; hence, you have to guess and try some fixes. Sad!

Why Does The “Terraria Lost Connection” Issue Occur? 

There can be a few reasons behind this warning in Terraria, but the following are the main and the most common ones reported by users. 

  • The rhythm of your game is not syncing with the system.
  • More games are running in the background while you are playing Terraria. 
  • Your game has been affected by malware or viruses. 
  • You are using different styles of games. 
  • A firewall or antivirus installed or in-built into your device is causing the Terraria lost connection issue.
  • The network adaptor drive of the stream is outdated or is not updated.
  • There was a server failure while you were playing.
  • There’s an error in your Wi-Fi router.
  • You’re not matching Terraria versions with the players you’re playing with.
  • You’re not playing in a single mode.

Once you identify the reason behind the occurrence of the Terraria lost connection issue, you can try the different fixes; some best of them are mentioned below.

Top 10 Fixes For The “Terraria Lost Connection” Issue

Below are 10 amazing resolutions we’ve compiled for you. Each of these has worked for almost every Terraria player, and so would you. 

  1. Switch Off The Games Running In The Background
  2. Check For The Latest Version Of The Game
  3. Check If You’re Playing Different Styles
  4. Deactivate Windows Firewall 
  5. Update Your Network Driver
  6. Enable Port Forwarding
  7. Uninstall And Reinstall Terraria
  8. Ensure That There Is No Mismatch In Version
  9. Make Sure That You’ve Made A Journey Character 
  10. Verify Integrity Of The Game Files
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1. Switch Off The Games Running In The Background

If you have other games running in the background, your Terraria might not work properly. As a result, you get this Terraria lost connection warning on your screen. Therefore, you should check first if other games are running in the background and if yes, close them.

This is a kind of bug that still exists despite frequent updates.

2. Check For The Latest Version Of The Game

This is another common issue with most users. If you’re using an outdated Terraria version, be ready for the lost connection issue and other bugs. Hence upon receiving this error, you must close the game and immediately update it if it’s due. 

Tip: You and all of your friends must also use Terraria’s updated version. 

You can update the game by following the steps mentioned below. 

  • Open the Steam Library.
  • Right-click on Terraria
  • Select Properties.
  • Click on the Local Files Tab.
  • Click on the option Verify Integrity Of Game Cache.

It will solve your issue with the latest version. And if not, then you were already using the latest version, and it might not be the reason behind this issue. 

3. Check If You’re Playing Different Styles

If your character and map don’t coordinate with each other, you’ll also get the “Terraria lost connection” warning on the screen. For the classic Map or Classic mode game, a classic character is required, and like this, a journey character is required for a journey map.

If you use a classic character for a journey map, you might see this warning on the screen. Hence, make sure you build a character accordingly, and this warning will never arise in the first place.

4. Deactivate Windows Firewall 

It would help if you tried deactivating your Windows Firewall temporarily and then playing the game. In rare cases, Windows Firewall might disrupt playing some games and consider some files a threat. 

The following steps should be followed to deactivate it. 

  • Open the Start Menu.
  • Search for Windows Defender Firewall and press the Enter key.
  • Click on Turn Windows Defender Firewall on or off.
Click on Turn Windows Defender Firewall on or off.
  • You need to select the Turn Off Windows Defender Firewall (not recommended) option that you’ll see on the Customized settings page on the screen. You need to select this in Public Network, Domain Network, and Private Network. 
  • Click on the OK button.  
  • Save the changes.

You can also temporarily check the issue by following the steps mentioned below. 

  • Press Windows + I keys to open Window Settings.
  • Select the Windows Security option.
Select the Windows Security option.
  • Click on Virus and Threat Protection.
Click on Virus and Threat Protection.
  • Select the Manage Settings option on the screen.
  • Turn Off the Real-time protection for some time.
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After this, check whether the game is working properly or not. If yes, then the firewall or antivirus program was behind this warning. 

5. Update Your Network Driver

If you are using an outdated version of the network adapter driver, this issue will arise. It will show glitches and lags in the game in between. Hence, if you want to play the game without disruption, you should always update your network adapter driver. 

It can be updated in two ways – manually and automatically. If you have a vast knowledge of this, you can go for the manual update; otherwise, choose the automatic option.

6. Enable Port Forwarding

If you enable the port forwarding, you can improve the server connection and won’t receive the warning of Terraria lost connection while playing the game. It will solve several issues, such as stable connection, connection loss issues, lagging issues, voice chat, etc. 

You can enable this by following the steps mentioned below. 

  • Select the Start Menu.
  • Type cmd in the search bar at the bottom. 
  • Select the Command Prompt and hit the Enter key.
Select the Command Prompt and hit the Enter key.
  • Copy and paste and press the enter key. You’ll get the networking details of your device.
  • You need to note down a few details, as it will be required later. These are Subnet Mask, Default gateway, IPv4 address, and DNS Server addresses. 
  • Open the Run box by pressing the Windows + R keys.
  • Open the Network connection by typing ncpa.cpl and hitting the Enter key. 
  • Right-click on the Active Network Adapter option and select the Properties option.
  • Use the following DNS server addresses and Use the following IP address option.
  • Now, type the details you wrote down in the earlier step from the command prompt.  
  • After this, click on OK and press Enter.
  • Restart your PC and apply these changes. 

Log in to the admin dashboard and click on Port Forwarding or Advanced Wireless on your Wi-Fi router to enable the port forwarding feature. 

Use TCP + UDP for your game after entering the IP address. For the start and end ports, you can select higher than 5000 or 7777.

Next, enable the Port Forwarding option. And after this, you should try checking for the error. 

7. Uninstall And Reinstall Terraria

If the warning or error is not disappearing after trying the above fixes, you can try uninstalling and reinstalling Terraria. Also, it would help if you asked your friends to do the same and, later, log in with the same ID.

Steps for this are: 

  • Press the Windows + R keys on your keyboard. This will open the Run box. 
Run box
  • Type appwiz.cpl and press the Enter key or click on OK.
Type appwiz.cpl and press the Enter key or click on OK.
  • Right-click on Terraria and select the Uninstall option.

After this, install the game from Terraria’s official website and restart your PC. Check if the error is fixed.

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8. Ensure That There Is No Mismatch In Version 

This issue arises mostly while trying to connect with your friend via steam. Thus, make sure that both you and your friend are trying to connect using the latest version of the game. Otherwise, the version mismatch will lead to the error appearing.

9. Make Sure That You’ve Made A Journey Character 

Make sure you made a Journey character, especially if you attempt to connect it with the journey mode game. And if you made a different character, this error will pop up on your screen. Hence, doing this is important for the game to work properly. 

10. Verify Integrity Of The Game Files

To avoid the bug, you need to check for the integrity of game files via Steam. This can be done by following the steps mentioned below. 

  • Open the Library.
  • Find Terraria and right-click on it.
  • Select the Properties Option.
Select the Properties Option.
  • Select the Local Files tab. 
  • Click on Verify Integrity of Game Files.
Click on Verify Integrity of Game Files.

You can check if your files are up to date and proper or in case there is an issue. If all of the files are updated, check for the error again.

So, these were the important, and possible fixes that can be used for the annoying Terraria lost connection error message.  


We hope that you must have fixed the Terraria lost connection issue by now with the help of all the above fixes. The lost connection warning means that there is some technical glitch. And once you fix them, the game will run lag-free. 

Otherwise, it’s not a serious issue for which you need to take the device to a professional. This can be treated by anyone at home only. And there are chances of this warning arising again afterward. 

Frequently Asked Questions (FAQs)

Why can’t I join my friend Terraria?

Sometimes, you cannot join via the steaming route due to some specific settings. This setting is useful when you don’t want random people to join. Hence, your friend might have activated this setting, and you can’t join your friend on Terraria.

Why does my Terraria keep saying “lost connection”?

There can be several reasons behind this, such as server failure, error in the router, multiple games running in the background, different styles, etc. 

Why is Terraria Multiplayer not working?

In this situation, your fellow player might have some settings on the game through which random people can’t join their game. This setting might be the reason why Terraria Multiplayer is not working. Or in some cases, the connection might be weak, leading to such an issue.

Will uninstalling Terraria delete worlds?

If you were using the latest version, uninstalling Terraria won’t delete the worlds, as an updated version of this game stores data in document folders. In contrast, the older version does not save in the form of documents. Therefore, if you were using your older version of Terraria, uninstalling it might delete worlds.