Backend Error -- Error Signing In

Warhammer 40,000: Darktide Technical Support
1

Issue Type (Required):

Error - Backend Error

Issue Description (Required):

Since about 2 days back, tapping spacebar into login screen prompts “The response from Fatshark servers seems to be slow…” message.
Game attempts to log in.
Then shows “Backend Error - Error Signing In”.

Things I’ve tried but does not work:

  1. Uninstall/Reinstall including deleting all mods and appdata before reinstalling
  2. Connecting to hotspot instead
  3. Verifying integrity
  4. Disabling Firewall
  5. Flushing DNS, manually setting DNS to 8.8.8.8. and 8.8.4.4
  6. Rebooting router
  7. Restarting PC

I am able to access fatshark backend via the link posted in a recent thread.
I have no cFosSpeed.
My game is on SSD.

Things that worked (for like one occasion):

  1. Incidentally after 1st day of having error, I was having my ISP come by to set up for a re-contract. That allowed me to sign in for the day with 100% success rate but the next day (I shut down PC every day before sleep) I get same error again.
  2. Earlier while trying to troubleshoot again, disabling mods completely allowed me to log in ONCE. But after that while trying to reproduce error, disabling/re-enabling/ everything else did not work again.

Location: Singapore

ISP: MyRepublic

[PC] Do You Use Mods? (Optional):

Yes, and I’ve tried disabling them

Reproduction Rate (Required):

Constant (100%)

Platform (Required):

PC - Steam

[PC] Upload Console Log & darktide_launcher.log (Optional):

console-2025-11-14-16.08.30-50936fcf-68c3-4bdc-8d59-8080b2495b74.log (66.9 KB)
darktide_launcher.log (41 KB)

2

Thanks for the detailed report here. When you connected to the mobile hotspot, was there any change?

3

None at all. I got the exact same issue.

4

My suspicion would be that something running on the PC is blocking the required connections - I understand you’ve already looked at whether your Firewall could be the culprit. Could you try a ‘Selective Startup’ instead?:

  1. Press the Windows key
  2. Type ‘msconfig’ and select ‘System Configuration’
  3. On the ‘General’ tab, select ‘Selective Startup’
  4. Deselect ‘Load startup Items’
  5. Reboot your PC
  6. Launch Darktide as normal
5

Apologies for the late reply.

I couldn’t deselect the load startup items reliably (my windows keeps turning it back on) but I think I managed it once but unfortunately it didn’t work.

I’ve also manually disabled almost every single startup item but still no go.

Funnily, I even bricked my PC because I stupidly disabled my services.msc so it will be a while until I can try anything else.

6

I’ve managed to do a fresh re-install of Windows, which means my startup items are at a minimum.

My installed programs:
Discord
Steam
Firefox
Chrome
Spotify
AMD drivers

Unfortunately still experiencing the same errors. It seems quite unlikely that something on startup is responsible for the error.

7

Hmmm, okay - I’ll need to escalate this. Could you share your most recent console log with us, please? :folded_hands:

8

console-2025-11-17-17.27.03-4511c3fc-4172-4388-91d7-71724dc0c053.log (71.0 KB)

console-2025-11-18-14.49.10-5a2a28e2-1770-4534-9af1-18d2eb349df7.log (22.6 KB)

console-2025-11-18-14.44.07-08dc4d4a-fa9c-45a6-af56-df2ce1d4cb65.log (21.6 KB)

console-2025-11-18-14.41.08-7c62c257-95bc-47d4-859d-a6e5a69aa4d9.log (104.2 KB)

console-2025-11-17-17.54.46-8908f1aa-9f7e-4fee-966e-dea36b2aa354.log (92.9 KB)

Thanks. I’ll keep checking back (this thread and the forum) and hopefully we figure out what is going on. I really love the game and look forward to playing it again soon.

9

Just trying my luck and checking in – is there any updates on whether there’s any clue what’s happening?

10

Hope to have an update soon :pray:

11

An idea from one of our Backend Engineers is to experiment with a VPN - which might help in identifying where the issue could be originating. Traditionally, we’d imagine that the mobile hotspot would help with that, but it might be broken config on the machine itself that using a VPN’s virtual network adapter could provide an alternative to.

12

Thanks for the idea.

I gave it a try but it didn’t work.