Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000

Development Programming & Scripting
21

Hey it seems like we have the same problem can u pls tell me how you fix it

22

Hi! I found my problem after weeks, I had to debug all day.

First, I deleted some files in the project folder for testing purposes to understand what causes crash on launch. After a couple of tryings, I found it was casued by Level1.umap

I deleted this file, my project opened, imported back and open the level, it crashed again.

So I opened a new project, imported that Level1. And started to testing by deleting some parts on the Level. After lots of tryings, I found it there was duplicated Directional Light. I don’t know how this happened but Level1 have “Directional Light” and “Directional Light - WORK TESTING ONLY”, so I deleted work testing one and the problem has gone.

TLDR; Don’t duplicate, scale, or change world position (0,0,0) of Directional Light. Also you can check your other lights.

Hope it helps.

3 Likes
23

Thanks a lot, for your replay

after reinstalling my windows and all the DLL file, I found that the problem is on my wood pc (gt 820M &2GH) and to bypass that problem u must change DX12 To DX11
in DefaultEngine.ini script in Project\Config
and yes these will reduce the Quality of UE5 but that is a temporary solution until UE5 Fix it in any next update or hopefully If god permits you would buy a new pc gamer.

1 Like
24

I have the same crash, it happens only when I try to render a camera shot using movie render queue. " [Unhandled Exception: EXCEPTION_ACCESS_VIOLATION Reading address 0x00000000]" I tried all suggestions. I need to make renders for my client and because of this annoying crash I can’t. Any help please, !?

25

Your the greatest thank you :3

26

this is not an issue, this is related to your antivirus program, delete avast antivirus and re-install the engine giving it full access to internet…

hope it helps
cheers!

27

I don’t use any antivirus. everything was working fine before, I have rendered images and sequences with movie render queue in the same project before, until now, it became imposible !? :confused:

28

Fr anyone who is facing the issue after two months scratching my head and thanks to me, I found that the problem was from the terrain, by deleting the terrain everything works fine. So any similar issue is due to some corrupted actor in the world outliner.

29

For anyone else wondering what this is, it is a nullptr error. This occurs when a pointer used by either your c++ code or your blueprints has no value set. Often times you have a pointer in c++ that you needed to set in one of your blueprints, such as the attack distance. You can fix this in c++ by using an if check, ie:

if (myPtr)
{
myPtr->PlayFX();
}

In Blueprints you can use the ‘Is Valid’ macro (the one that has a question mark next to it, not an f.) Both of these examples make it so that the code only executes if the pointer is valid (not a nullptr).

30

Hey so I just got the 5.0.3 for unreal and now I can’t open new or old projects.
I keep getting a 0x0000000000000008

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000008

atidxx64
atidxx64
atidxx64
atidxx64
atidxx64
atidxx64
atidxx64
atidxx64
kernel32
ntdll

I tried debug mod and plenty of YouTube refences. Still the same problem.
I’m new to this so I’m not sure if I am going about this right.
any suggestions would be kindly appreciated.

31

Hahaha, 2 years later and I kept crashing with an error with a proper hexadecimal number, not null, by adding variables to a struct in blueprints. Closed MSI Afterburner and went straight through, no issues! Legend!!

32

I get a similiar unhandled exception error about a minute into starting my game only in a packaged build, can anyone point me in the right direction to where I can look for this error? Thanks

Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000001e3070228

0x00007ff78b7501cc ExampleOSS-Win64-Shipping.exe!UObject::() []
0x00007ff78d9478bc ExampleOSS-Win64-Shipping.exe!FTickableGameObject::TickObjects() []
0x00007ff78d383889 ExampleOSS-Win64-Shipping.exe!UGameEngine::Tick() []
0x00007ff78a2d3704 ExampleOSS-Win64-Shipping.exe!FEngineLoop::Tick() []
0x00007ff78a2dd3ac ExampleOSS-Win64-Shipping.exe!GuardedMain() []
0x00007ff78a2dd42a ExampleOSS-Win64-Shipping.exe!GuardedMainWrapper() []
0x00007ff78a2de19c ExampleOSS-Win64-Shipping.exe!LaunchWindowsStartup() []
0x00007ff78a2e6f44 ExampleOSS-Win64-Shipping.exe!WinMain() []
0x00007ff78e315392 ExampleOSS-Win64-Shipping.exe!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
0x00007fff0cca7614 KERNEL32.DLL!UnknownFunction []
0x00007fff0df026a1 ntdll.dll!UnknownFunction []

33

just update your graphic drivers

34

hello, here i have the same problem, tried to go back to SM5 from SM6, still crashes, new project blank, crashes. Project that i worked with in like 2 years, crashes.

This is my crash report, i see that the D3D12Core (DirectX12) is causing issues.
I don’t know why it crashes now i’ve always worked with that.

LoginId:58c27fe249a25ae6216e3b9ca1cb2f46
EpicAccountId:d27b18b4a5344477a81bef7a7b5f15d9

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000103d81f05d0

nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
nvwgf2umx
D3D12Core
D3D12Core
dxgi
dxgi
dxgi
dxgi
dxgi
dxgi
dxgi
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

35

Any new ideas i have tried everything ???

LoginId:f8e090f541e478ee964721939ac090ff
EpicAccountId:c6f42f8d8fc94677a4f75ec9f26fd227

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION writing address 0x0000026a5f700030

nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
nvwgf2umx_7ffa44820000
D3D12Core
D3D12Core
dxgi
dxgi
dxgi
dxgi
dxgi
dxgi
dxgi
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_D3D12RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_RHI
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_RenderCore
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

36

did you find a solution??

37

keep crashing on shipping build on saving game and gives me this error “EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000008”, any possible solutions?

38

I got this error after GPU lightmap build/

solved after updating graphic card driver.
restore NVidia panel to default.
deleting intermediate folder.
opened another project in UE5. then returned to the crashed project, worked fine after this.

39

Bei mir hat es geholfen folgendes auszuführen: Stellen Sie das NVidia-Panel auf die Standardeinstellungen zurück.

40

This appears to have fixed my crash which output the same violation address.
I’d have never figured that out. many thanks.