UE4 or UE5 crash on Windows 11 with ray tracing

freeman5 · April 6, 2022, 3:12pm

Hi,

each time I start project with ray tracing UE4 or UE5 crash on windows 11, i have try on Windows 10 and its work, but i prefere Win 11… How to solve it ???

thank

Unrealgeek24 · April 6, 2022, 4:19pm

Have you tried to create another project with Ray Tracing and open that?

freeman5 · April 6, 2022, 4:47pm

Problem solved with another post, juste modify in config file DX12 to DX11 and now no problem ! Why epic do nothing about this bug ?

Unrealgeek24 · April 6, 2022, 8:58pm

I think DX12 is kind of a beta so theres some bugs. but im glad that worked!

Boufdon · April 7, 2022, 8:26pm

Hi, you said this is solved by modifying the config file, could you let me know how did you do that, please? Where is the other post? I am encountering the same issue. Thanks in advance.

freeman5 · April 8, 2022, 5:17am

Simply change " DefaultGraphicsRHI=DefaultGraphicsRHI_DX12 " to DX11 in C:\Users"yourname"\Documents\Unreal Projects\MyProject\Config\DefaultEngine.ini
Why epic don’t set DX11 by default ? its solve all problem…

Boufdon · April 8, 2022, 2:10pm

Amazing, many thanks, I will try this later.

freeman5 · April 9, 2022, 6:25am

Thank you epic, i have download city sample but its crash again because its use DX12, please fix this issue ASAP !!!

freeman5 · April 26, 2022, 2:46pm

Problem not solved since the new update !

freeman5 · May 4, 2022, 5:39pm

Problem not solved with the new nvidia driver update :’(

Frakatchoo · May 17, 2022, 8:24pm

It’s annoying, I don’t know if it’s the fault of DirectX, Nvidia Driver or Unreal Engine. But for the moment it is just impossible to finish a dx12 project under Windows 11. Problem not solved for months! Please Epic, shake things up.