Fix: “Backend Error: Error Signing in” in Warhammer Darktide

The Backend error message in Warhammer 40K Darktide prevents you from signing in. This error is very frustrating as it prevents from accessing the game. It occurs due to a number of reasons, which can include the Xbox app on your Windows machine, interference of your modem’s firewall with the incoming and outgoing connections by the game, server outage.

Backend Error Message in Warhammer 40K Darktide
Backend Error Message in Warhammer 40K Darktide

This error is also reported to occur when playing the game, this can be really annoying especially if you are in middle of a match. All your progress will be lost and you will be forced to restart the game.

In some scenarios, the problem can be caused by the third-party antivirus program that is running in the background as well. Network connection inconsistencies also tend to trigger the Backend error message on Warhammer Darktide, which is why, in this article, we are going to show you a number of methods that you can use to resolve the error message in question. 

1. Restart Steam

The first thing you should do when starting to troubleshoot the error message in question is to restart the Steam application on your computer. In some cases, the problem can occur when the Steam app is not able to relay your connection request properly due to an inconsistency with the ongoing process.

In such a scenario, restarting the Steam application can often fix the issue since you will be forcing it to establish a new connection with its servers. This will cause any network inconsistency to go away and you should be able to log in. 

Therefore, go ahead and exit the Steam client completely on your computer. You might want to open the Task Manager and kill any Steam processes in the background as well. Once you do that, open the Steam client again to see if the problem persists. 

2. Sign Out of Xbox App

If you are using the Xbox game pass on your computer to play the game, it is likely that the Xbox app is causing the connectivity issue. In such a scenario, you will have to sign out of the Xbox app on your computer so that you are forced to choose an account the next time you open the game. 

Doing so will refresh the local Xbox account cache on your computer and establish a new link with the server. This is likely to resolve the connectivity issue and you should be able to log in. Follow the instructions below to sign out of the Xbox app:

  1. First, open the Xbox app on your computer.
  2. After that, click on your profile picture and choose Sign Out from the drop-down menu.
    Signing out of Xbox App
    Signing out of Xbox App

3. Use Different Network Connection

In some scenarios, the network connection that you are using on your computer can also cause the backend error message. This can happen when your network is unable to establish a connection with the Warhammer 40k Darktide servers and thus prompts the error signing in message when you try to do so. 

If this case is applicable, you will have to use an alternative network connection to connect to the servers. If your computer supports WiFi, you can turn on your mobile data and use that to try to establish a connection to the servers. Once you are logged in, you will be able to switch back to your ethernet without any issues. 

In addition, using a VPN connection can also be beneficial in these cases. This is because a VPN connection will change your public IP address for the sake of masking your online identity. In case your IP address was blocked by the game servers, you will be able to establish a connection without any issues once you have connected to a VPN server. 

4. Disable Third-Party Antivirus

If you have a third-party antivirus program on your computer, it can cause connectivity issues with various games as well. Having a security program on your PC is beneficial as it helps keep you safe from different threats. However, one of the major downsides of such programs is their over-protectiveness and breaking things by preventing them from working properly. 

The antivirus program on your computer can interfere with the game process and block any connections that are being established by it, which can result in the backend error message. In such a scenario, we recommend disabling your third-party antivirus program to see if that resolves the issue.

Antivirus Disabled

In case the problem goes away after you disable your security program, you can whitelist it in your antivirus software to prevent such issues from occurring in the future. 

5. Disable Third-Party VPN

Using a third-party VPN connection can also cause the issue in question. This can occur when the VPN client interferes with the connection the game server is attempting to make with your computer. VPN clients provide real-time protection by masking your identity online with the help of tunnelling your connection. However, this can turn out to be problematic with various games. 

If this situation applies, you will have to turn off your VPN client to see if it stops the issue from occurring. The process can differ when you have added a VPN connection to your Windows internet settings. In such a scenario, follow the instructions below to remove the VPN connection:

  1. First, open the Settings app by pressing the Windows key + I on your keyboard.
  2. In the Settings app, navigate to Network and internet > VPN.
    Navigating to VPN Settings
    Navigating to VPN Settings
  3. There, you can click the Disconnect option to disconnect from the VPN connection. See if that resolves the issue. 
  4. To remove the VPN client, click the down arrow next to your VPN connection. 
  5. Click on the Remove button that appears.
    Removing VPN Connection
    Removing VPN Connection

6. Restart Router

Restarting your router is always an option to consider when you’re facing connectivity issues on your computer. This is because the router serves as the gateway between your computer and the internet. Therefore, if there is an inconsistency with the router, you are likely to encounter an issue here and there.

Restarting your router does not harm you in any way, it only changes your IP address since a new connection is established with your respective internet service provider (ISP) servers. In addition, the local cache of your router is refreshed with the new connection details which can often resolve such issues. 

To restart your router, simply press the Power button on your router to turn it off and then back on. Once you do that, see if the problem goes away.

Restarting Router
Restarting Router

7. Change DNS Server

DNS servers play a vital role when you are trying to establish a connection with a server. Domain Name System servers are responsible for translating the web addresses of the servers that you wish to connect to into IP addresses.

If the DNS server that you are using on your computer is unable to resolve Warhammer 40K Darktide servers, you will not be able to establish a connection. This is simply because the connection or request is not even reaching its destination. In such a scenario, you will have to change the DNS server to resolve the issue. You can use Google or Cloudflare’s public DNS servers on your system. Follow the instructions below to do this:

  1. First, open the Settings app by pressing the Windows key + I on your keyboard.
  2. Navigate to Network and internet > Advanced network settings > More network adapter options.
    Navigating to Network Adapter Options
    Navigating to Network Adapter Options
  3. On the Network Connections window, right-click on your network adapter and choose Properties from the drop-down menu.
    Navigating to Ethernet Properties
    Navigating to Ethernet Properties
  4. After that, on the Properties window, double-click on the Internet Protocol Version 4 (TCP/IPv4) option.
    Opening IPv4 Properties
    Opening IPv4 Properties
  5. At the bottom, choose the Use the following DNS server addresses option.
  6. Then, provide either one of the following DNS server addresses:
    Google: Cloudflare: 
  7. Finally, click OK and close the windows.
    Changing DNS Server
    Changing DNS Server
  8. Open the game again and see if the problem persists. 

8. Disable Modem Firewall (if applicable)

Finally, if none of the above methods has resolved the issue for you, it is very likely the problem is caused by a security feature of your network modem. Modern modems come with security features such as firewalls that manage the incoming and outgoing requests on your network, similar to the Windows Defender Firewall on your computer.

In some cases, the modem firewall can block incoming or outgoing game connections on your network which causes the game to not function. In this case, it would cause the Backend error message. In such a scenario, you will have to disable the modem firewall to resolve the issue.

To do this, navigate to your network control panel and look for any security settings. If your modem features a firewall, disable it and see if that resolves the issue. 


Muhammad Zubyan

Muhammad Zubyan is a certified Google IT Support Professional with over 7 years of extensive experience. He has worked on more than 1500 computers, gaining valuable insights that enable him to detect and troubleshoot any complicated root cause of Windows-related issues and errors. In addition to managing Appuals as a Senior Editor, he is currently developing his own Game Optimization program that caters to both gamers and casual users alike.