I'm getting a crash on unreal engine 5.1.0 - EXCEPTION_ACCESS_VIOLATION

[ShnAhmeet]

I tried all the solutions here;

• nvidia control center settings change, reset.
• I don’t get this error in 4.27.2.
• I verified.

I only uploaded the first 3 and the last 3 log files. I can upload it if you want. There are 54 pages of logs.

[EliasWick]

It’s cool if you upload the entire log, as long as it is formatted and it doesn’t overstep the character limit. The error message “EXCEPTION_ACCESS_VIOLATION” is typically caused by an issue with memory access in the program. This can occur due to a variety of reasons, such as:

• Attempting to access memory that has been freed
• Attempting to access memory that is not allocated
• Attempting to access memory outside of the program’s allocated space

In the context of Unreal Engine 5.1.0, this error can be caused by a bug in the engine or a problem with a specific asset or plugin. Here are a few things you can try to resolve the issue:

• Try to isolate the issue by creating a new project and importing only the necessary assets and plugins. If the issue does not occur in the new project, you may have a problem with one of the assets or plugins in your original project.
• Check if there is any error message in the output log, as this may indicate the cause of the problem
• Try to reproduce the error and if possible, share the call-stack or the output log with the community or the developers of the engine.

Please note that this is a general troubleshoot and the exact cause of the error may vary depending on the specific scenario.

[SupportiveEntity]

Hey there @ShnAhmeet! This is a memory access problem that usually stems from the graphics driver side nvwgf2umx. I have a thread over here with tons of links to possible fixes scattered throughout. Apologies it’s a bit of a link hop, I’m planning on consolidating a post for this specifically but I hadn’t had the time yet.

3D Model is crashing UE5 when opening Level

The Level is blank besides the model, so I’m assuming it’s the model. I exported it from RC and have a 3070 GPU / AMD Ryzen 7 5800H processor, so my laptop can handle it. It was downsized in RC to 4k and 5m polygons, not even 39-40m, so not sure what is suddenly so demanding that UE5 has to crash within seconds of opening the Level. If it’s relevant to the issue, I only get one texture and one normal map in my export, whereas others’ workflows seem to have several of each.

[NeoTactical]

Another solution is to open the uproject in an editor and change the RHI to use direct 11. This was an issue for me when UE5 forced Direct 12 when i had a bad graphics driver. You may also find these settings in the config files.

Another Thread with more information

Project Settings> Default RHI stuck on DirectX 11, can't set to DirectX 12

Confusing issue. Quick google search turns up nothing. In 4.27 when I try to enable Ray Tracing by switching Default RHI tp DirectX 12 and restart UE, sometimes it works but just as many times I stay stuck on DirectX 11 with no Ray Tracing. Can anyone suggest why this may be happening?

[ShnAhmeet]

Thank you for your answer, I tried everything, none of them worked. I don’t get crashes without adding the starter pack and lowering the quality and running it. I hope no one else gets this error.