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How to fix Darktide error 1003?

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Regardless of how good a game is, the game ratings won’t be very good unless it’s stable enough to let the players enjoy their game time rather than crashing with error codes. That’s exactly the case with Warhammer 40,000: Darktide. While the game itself is excellent, the frequent bugs and glitches keep players from enjoying their time. 

In this article, we’re talking about Darktide error code 1003, its causes, and how you can fix the problem.

What causes Darktide error 1003?

The error code is generally triggered when a player tries to connect to the game servers. There are several reasons why you might see this, including but not limited to the following:

  • Internet connectivity issues.
  • Darktide servers are down.
  • Corrupt or missing game files.

Also read: How to fix Darktide backend error: Error signing in? 

How to fix this?

Here are seven fixes you can try out. 

Restart your router

Restarting your router can help eliminate any unseen network or connectivity issues you may face. You have to turn off your router, wait a bit, and then turn it back on again. 

Restart your game

One of the easiest ways to fix the problem is to restart the game. Restarting games and programs often resolves temporary bugs that can cause crashes or connectivity issues. Once the game is stopped completely (you can verify this using the Task Manager), relaunch it using the Steam launcher, and it should work just fine. 

Also read: How to fix Darktide error code 4008?

Check for server outages

Another thing you should keep an eye out for is any outage caused on the game’s end. Darktide has a dedicated Twitter account for this as well. So if you feel like the error is being caused by the server’s end, check the aforementioned Twitter profile to see if that’s the case. 

Check Firewall

Sometimes the Windows Firewall can get in the way of programs trying to access the internet, which can very well be the case here. Try temporarily disabling your firewall to see if Darktide starts working properly.

You can check out how to use the Windows Firewall here

Change NAT type

If your router has a NAT type 3, otherwise called strict, you will run into problems with a game, as strict NAT types often block internet traffic to non-essential programs. If you have admin access to your network, try changing the NAT type to see if that resolves your error.

Check out our detailed guide on how to change NAT type on consoles here

Also read: Fix: This build of vanguard requires TPM version 2.0

Verify Game Files

Corrupted game files can often lead to issues like this, not just in Darktide but other games. Luckily, Steam has a built-in feature that verifies your game files and reinstalls any files that might be damaged. Follow these steps.

Step 1: Head over to your Steam Library, right-click on Darktide and select Properties.

How to fix the 'VAC was unable to verify your game session' error?

Step 2: Head over to the Local Files tab.

How to fix the 'VAC was unable to verify your game session' error?

Step 3: Click on Verify integrity of local files… and let Steam do its thing. 

How to fix the 'VAC was unable to verify your game session' error?

Now try relaunching the game. 


If checking the game files didn’t work out, your best bet is to delete the game from Steam and reinstall it from scratch. Ensure to overwrite your game save with the new installation, as corrupt saved files can also cause this issue. 

Also read: How to fix Darktide error code 10022?


Yadullah Abidi

Yadullah is a Computer Science graduate who writes/edits/shoots/codes all things cybersecurity, gaming, and tech hardware. When he's not, he streams himself racing virtual cars. He's been writing and reporting on tech and cybersecurity with websites like Candid.Technology and MakeUseOf since 2018. You can contact him here: