# UE5 - Crash when start, I swear I dindt do anything. **URL:** \ **Category:** Feedback & Requests\ **Tags:** error, unreal-engine, crash, UE5-0, question\ **Created:** [August 15, 2022, 9:18pm UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077 "2022-08-15T21:18:12Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Lanavededante](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lanavededante/32/988456_2.png) [@Lanavededante](https://forums.unrealengine.com/u/Lanavededante)\ **Post date:** [August 15, 2022, 9:18pm UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077/1 "2022-08-15T21:18:12Z")
Im trying to take a look to Unreal Improvements but it dosent work. I didnt even open it and it is crashing, Im lost and I have no clue. I tried to reinstall and verificate but nothing works. Here is the video of the crash ([When I run Unreal Engine 5 it open crashing. WHY? :( #ue5 #unrealengine #gamedev - YouTube](https://youtu.be/4ubabRBD1Sk))[Why is UE5 crashing ?](https://youtu.be/4ubabRBD1Sk) I dont see any other crash like this one in youtube so If we find out the solution i will make a video to help others. Thankyou for your time Gamedevs! 😃 ---
**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\ **Post date:** [August 16, 2022, 1:34am UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077/2 "2022-08-16T01:34:24Z")
Hi Lanavededante, It’s not an ideal solution but I think people have solved this problem by changing Project Settings → Default RHI from ‘DirectX 12’ to ‘DirectX 11’ - Let me know if you have trouble changing the setting with your menu problem. (It is possible to change setting via .ini) Fingers crossed that this will be solved in 5.1 though. (I’ve seen several people with this UI issue, I think it might be specific to laptop GPUS - are you on a laptop?) Welcome to the forums, in regards to the audio track on your vid please know that we try to keep things PG-13 around here. (Technically you can say f\*\*\* once in a PG-13 movie 😉 ) ---
**Author:** ![mochfar1](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mochfar1/32/561571_2.png) [@mochfar1](https://forums.unrealengine.com/u/mochfar1)\ **Post date:** [August 16, 2022, 2:24am UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077/3 "2022-08-16T02:24:25Z")
Hi Lanavededante, You can read the same topic like yours in [this link](https://forums.unrealengine.com/t/unreal-crashes-as-soon-as-i-open-a-project/568869/) The other solution might work is manually start Unreal Engine with DX11 without changing the default RHI in Project Setting. I’d tried both ways and all works, but I think it’s better leave the project setting in DX12. But I still don’t know the consequence by manually start with DX11, will all the feature that only work in DX12 won’t be run or it will be crashed the engine if I force it to run. 🤔 ---
**Author:** ![Lanavededante](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lanavededante/32/988456_2.png) [@Lanavededante](https://forums.unrealengine.com/u/Lanavededante)\ **Post date:** [August 16, 2022, 7:35pm UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077/4 "2022-08-16T19:35:22Z")
Hi ! Thank you for your quick replys! I have done that but i cant use nanite and lumen. Its possible to use nanite and lumen in Dx11 ? 🥺 Because Im preparing some classes that I am going to give and those are the main topics 🥲 ---
**Author:** ![Lanavededante](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lanavededante/32/988456_2.png) [@Lanavededante](https://forums.unrealengine.com/u/Lanavededante)\ **Post date:** [August 16, 2022, 7:36pm UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077/5 "2022-08-16T19:36:59Z")
Sorry ! I didnt listen it 🥲 . My bad ! I will be more careful. 😬 Im using a desktop pc. ---
**Author:** ![mochfar1](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mochfar1/32/561571_2.png) [@mochfar1](https://forums.unrealengine.com/u/mochfar1)\ **Post date:** [August 17, 2022, 2:22am UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077/6 "2022-08-17T02:22:47Z")
> [@Lanavededante](#): > > Hi ! Thank you for your quick replys! I have done that but i cant use nanite and lumen. > Its possible to use nanite and lumen in Dx11 ? 🥺 > Because Im preparing some classes that I am going to give and those are the main topics > 🥲 Hi! From some UE5 references, Nanite & Lumen require DX12, so I’d make sure my project setting in DX12 although start the engine in DX11 These are some contain of my DefaultEngine.ini that related to the project setting: [/Script/EngineSettings.GameMapsSettings] GameDefaultMap=/Game/enviro.enviro EditorStartupMap=/Game/enviro.enviro [/Script/HardwareTargeting.HardwareTargetingSettings] TargetedHardwareClass=Desktop AppliedTargetedHardwareClass=Desktop DefaultGraphicsPerformance=Maximum AppliedDefaultGraphicsPerformance=Maximum [/Script/WindowsTargetPlatform.WindowsTargetSettings] DefaultGraphicsRHI=DefaultGraphicsRHI\_DX12 [/Script/Engine.RendererSettings] r.GenerateMeshDistanceFields=True r.DynamicGlobalIlluminationMethod=1 r.ReflectionMethod=1 r.Shadow.Virtual.Enable=1 r.SkinCache.CompileShaders=True r.RayTracing=True r.Lumen.HardwareRayTracing=True . . . And until now that project file still can be opened without crashing with manually start the UE5 with DX11 as Lumen & Raytracing setting is active. But what I do with that project still some simple stuff and still not using nanite assets as I’m still in beginner level in UE5. May be some couple days I’ll put the nanite assets and see if it crashed or not 😖 ---
**Author:** ![Lanavededante](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lanavededante/32/988456_2.png) [@Lanavededante](https://forums.unrealengine.com/u/Lanavededante)\ **Post date:** [August 17, 2022, 11:30pm UTC](https://forums.unrealengine.com/t/ue5-crash-when-start-i-swear-i-dindt-do-anything/629077/8 "2022-08-17T23:30:57Z")
I appreciate a lot your answer 🤩! Im will be waiting to know about how your project is going, I will try to make the config in Dx12 but start it in Dx11 im no sure how to do that but I will try and leave my results here ! Thankyou a lot you are awesome ! 😃 I deleted the other answer because it was repeated, im still figuring out how the forum works sorry 😔