Fatal Error pop-up when joining private server

Basic Info:

Platform: Steam
Issue Type: Crash
Game Mode: Online Private
Server Type: PvE
Map: Exiled Lands
Server Name: None
Mods: None

Bug Description:

My friend and I were clearing out The Unnamed City and all of a sudden I jumped down a hill and got a fatal error pop-up. Closed the game and reopened with the same pop-up happening when joining the server once again. Tried verifying the local files and repair any broken ones and reopen the game - same fatal error pops up.

Pop-up reads;

Fatal error: [File:C:\B\tech_exiles\code\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 805]
Rendering thread exception:
Fatal error: [File:C:\B\tech_exiles\code\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 181]
Unreal Engine is exiting due to D3D device being lost. (Error: 0x887A0005 - ‘REMOVED’)

Bug Reproduction:

  1. Opened The game
  2. Joined friends’ server
  3. Server is loading
  4. Fatal error pops up on screen
  5. Clicks okay
  6. Game closes.


Thank you for reaching out to us. Here are some ideas of what could impact or provide that error message. Please try the following:

  • Update Windows (no need to change to Win11 though, just update the current version you have)
  • Update Graphics Driver
  • Change to Default Graphics Card
  • Verify files in Steam
  • Disable NVIDIA Geforce/ AMD Radeon Experience Battery boost
  • Disabling Antivirus/Firewall Software
  • Turn off Overclocking and SLI Technology
  • Reduce PC’s energy consumption

Make sure to reach out if the issue still persists.
We hope this helps!

how to solve this i still cant play

fatal error: [file:c:\b\tech_exiles\code\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp] [line: 3448] could not find superstruct spear2h_c to create mi_rangeddragon_c !0x0000000000000

Reduce PC’s energy consumption? Hogwash.

how to reduce?

That’s not a solution, just their “Eco Friendly” suggestion.

1200 power supply just build PC with 3080 nvidia card


fun part everyone on my server play i have this issue cant log in lol

i delete not updated EEWA mod now all work had to try each in single player mod