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

“Backend Error: Error Signing in” in Warhammer 40,000: Darktide shows up right after you launch the game, stopping you from getting to the main menu or picking your character. This error means the game can’t connect to its login servers, so you can’t sign in.

The most common reason is that an antivirus or firewall program, like Kaspersky or Norton, is getting in the way. Problems with your router settings or restrictions from your internet provider can also cause this error.

In this article, we will discuss different ways to solve this error.

1. Restart Steam

The first troubleshooting step is to restart the Steam application on your computer. Sometimes, the error can appear because the Steam app isn’t properly handling your connection request, possibly due to an issue with its current process.

Restarting Steam can often fix the issue as it forces the app to reconnect to the servers, clearing out any connection problems. Just exit Steam completely on your computer. For best results, open Task Manager and end any Steam processes running in the background. Then relaunch Steam and try logging in again to see if the error is gone. 

2. Sign Out of the Xbox App

If you’re using the Xbox Game Pass on your computer to play Warhammer Darktide, the Xbox app might be the source of the connection issue. In this case, try signing out of the Xbox app so that you’ll have to select your account the next time you launch the game. 

Signing out will refresh your local Xbox account cache and create a new link with the server. This simple step often resolves connection problems.

1. Open the Xbox app on your computer.
2. Click on your profile picture and select Sign Out from the drop-down menu.

   

3. Use a Different Network Connection

In some cases, your current network connection may be preventing you from connecting to the Warhammer 40K Darktide servers, causing the backend error message. If so, switching to another network might help.

If your device supports WiFi, you can try using your mobile data by enabling your phone’s hotspot and connecting your PC to it. Once you’re able to log in, you can usually switch back to your regular Ethernet or main WiFi network without any problems. 

Alternatively, trying a VPN can sometimes help. A VPN changes your public IP address and might help if your IP was blocked by the game servers. Just keep in mind that some VPNs can cause issues (see step 5), so this is a step to try if your normal connection isn’t working. 

4. Disable Third-Party Antivirus

A third-party antivirus program can block the connection between your computer and the game’s servers. While antivirus software is important for security, sometimes it can be too aggressive and disrupt network connections needed for games like Warhammer Darktide. 

Try temporarily disabling your third-party antivirus program to see if the error goes away.

If disabling the antivirus solves the problem, you can add Warhammer Darktide to your antivirus “whitelist” or exclusions list so that your security software won’t block it in the future. 

5. Disable Third-Party VPN

If you’re using a VPN, it might also be interfering with your connection to the game servers. Although VPNs are useful for privacy and security, they can sometimes disrupt connections to online games. 

Try turning off your VPN client to see if this solves the issue. If you’ve added a VPN connection through Windows settings, you may need to disconnect and remove it.

1. Open the Settings app by pressing Windows key + I.
2. Go to Network and Internet > VPN.

   

3. Click Disconnect to disconnect the VPN. Check if the game now works.
4. To remove the VPN completely, click the down arrow next to your VPN connection.
5. Click Remove to delete the VPN connection.

   

6. Restart Your Router

Restarting your router is a quick and simple way to fix many internet-related issues, including problems with connecting to game servers. Your router acts as the gateway between your computer and the internet, so any inconsistency can cause problems like the backend error in Warhammer Darktide.

Restarting your router won’t hurt anything—it will just reset your internet connection and refresh your router’s cache. This often resolves the problem.

To restart your router, simply press the Power button to turn it off, wait a few seconds, and then turn it back on. After it reboots, check if the error message is gone.

7. Change DNS Server

DNS (Domain Name System) servers help translate website and server addresses to the correct IP addresses. If your DNS server is having trouble making this translation for Warhammer 40K Darktide, you won’t be able to connect to the game.

If that’s the case, changing your DNS server to a public DNS (such as Google DNS or Cloudflare) may help.

1. Open the Settings app by pressing Windows key + I.
2. Go to Network and Internet > Advanced network settings > More network adapter options.

   

3. In the Network Connections window, right-click your network adapter and choose Properties.

   

4. In the Properties window, double-click Internet Protocol Version 4 (TCP/IPv4).

   

5. At the bottom, select Use the following DNS server addresses.
6. Enter one of these DNS server addresses:

   Google: 8.8.8.8 and 8.8.4.4 
   Cloudflare: 1.1.1.1 and 1.0.0.1 
   

7. Click OK and close all windows.

   

8. Now try launching the game again to see if the error is resolved. 

8. Disable Your Modem Firewall (If Applicable)

If none of the methods above have worked, your modem’s firewall might be blocking the necessary connections for the game. Many modern modems include firewall features that manage data traffic just like the Windows Defender Firewall does on your computer.

Sometimes, your modem’s firewall can accidentally block game data, resulting in backend errors. To fix this, log in to your modem’s control panel (usually through a browser) and look for security or firewall settings. If you find firewall features enabled, try turning them off and see if the problem goes away.