# Unreal Engine 5 crashes on Start up **URL:** \ **Category:** Blueprint\ **Tags:** unreal-engine, UE5-0\ **Created:** [June 1, 2021, 4:10am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776 "2021-06-01T04:10:03Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![JustinSUF](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/justinsuf/32/88719_2.png) [@JustinSUF](https://forums.unrealengine.com/u/JustinSUF)\ **Post date:** [June 1, 2021, 4:10am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/1 "2021-06-01T04:10:03Z")
Error Message: LoginId: removed for reasons EpicAccountId: removed for reasons Assertion failed: NumBytes == Strings.Num() [File:D:/build/++UE5/Sync/Engine/Source/Runtime/Core/Private/UObject/UnrealNames.cpp] [Line: 3357] UnrealEditor\_Core!LoadSeparatedNameBatchInShardOrder() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:3357] UnrealEditor\_Core!FNameBatchLoader::Load() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:3493] UnrealEditor\_Core!LoadNameBatch() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\UObject\UnrealNames.cpp:3502] UnrealEditor\_AssetRegistry!FAssetRegistryReader::FAssetRegistryReader() [D:\build++UE5\Sync\Engine\Source\Runtime\AssetRegistry\Private\AssetRegistryArchive.cpp:140] UnrealEditor\_AssetRegistry!FAssetDataGatherer::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\AssetRegistry\Private\AssetDataGatherer.cpp:525] UnrealEditor\_Core!FRunnableThreadWin::Run() [D:\build++UE5\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:146] Specs: AMD Ryzen 5 2600X Radeon RX 580 16 GB of DDR4 Ram It was running fine for the past few days, but yesterday it just decided to start crashing when I first start it. I tried reinstalling it before to see if it would fix it, but it just gave me the same error. Any Ideas on how to fix it? ---
**Author:** ![anonymous\_user\_544bfa25](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_544bfa25](https://forums.unrealengine.com/u/anonymous_user_544bfa25)\ **Post date:** [June 14, 2021, 4:53am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/2 "2021-06-14T04:53:20Z")
Hi, I have the exact similar issue as Justin here. May I know if there is a solution? Now I could not open my levels done in Unreal 5 anymore, this is quite serious. Hope there is some help. I tried uninstalling, reinstalling unreal5, uninstalling, reinstalling to another folder and deleted all memory temporary files on windows, and it still doesn’t work. I don’t understand why a simple reinstallation cannot fix this “back to default” for unreal engine 5. Why is the realy problem here? ---
**Author:** ![JustinSUF](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/justinsuf/32/88719_2.png) [@JustinSUF](https://forums.unrealengine.com/u/JustinSUF)\ **Post date:** [June 15, 2021, 12:08am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/3 "2021-06-15T00:08:04Z")
I still could not figure out the issue. I been looking for a solution forever, and I still can’t find anything sadly. ---
**Author:** ![anonymous\_user\_18f7563e1](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_18f7563e1](https://forums.unrealengine.com/u/anonymous_user_18f7563e1)\ **Post date:** [June 21, 2021, 4:27am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/4 "2021-06-21T04:27:50Z")
Did you manage to fix it? Getting the same error here. Can’t open my project anymore… ---
**Author:** ![grievertime](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@grievertime](https://forums.unrealengine.com/u/grievertime)\ **Post date:** [June 21, 2021, 4:32am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/5 "2021-06-21T04:32:45Z")
Hi guys, for me worked to delete the folder: C:\Users\youruser\AppData\Local\UnrealEngine\5.0 Hope it helps. ---
**Author:** ![anon34991873](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anon34991873](https://forums.unrealengine.com/u/anon34991873)\ **Post date:** [June 21, 2021, 4:34am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/6 "2021-06-21T04:34:50Z")
I was suffering from this up until recently, this is how I solved it… This error comes from a corrupted CachedAssetRegistry.bin file. Reinstalling it does not fix the file. To fix this, you are going to want to go to file location C:\Users\username\AppData\Local\UnrealEngine\5.0\Intermediate - Locate the file named CachedAssetRegistry.bin and delete it. After deleting it, you should be able to launch ---
**Author:** ![sefaoruc](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sefaoruc/32/88719_2.png) [@sefaoruc](https://forums.unrealengine.com/u/sefaoruc)\ **Post date:** [September 16, 2021, 12:52pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/7 "2021-09-16T12:52:18Z")
Thank you very much, my problem is solved 🙂 ---
**Author:** ![V\_VILLAIN](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/v_villain/32/1073986_2.png) [@V\_VILLAIN](https://forums.unrealengine.com/u/V_VILLAIN)\ **Post date:** [September 25, 2021, 8:53am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/8 "2021-09-25T08:53:14Z")
> [@anon34991873](#): > > CachedAssetRegistry.bin definetly the fix. THANKS! ---
**Author:** ![V\_VILLAIN](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/v_villain/32/1073986_2.png) [@V\_VILLAIN](https://forums.unrealengine.com/u/V_VILLAIN)\ **Post date:** [September 25, 2021, 8:58am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/9 "2021-09-25T08:58:59Z")
This works also for others on 4.26 or 4.27 which i tested… So if some one googles and search for this ERROR: /Engine/Source/Runtime/AssetRegistry/Private/PathTree.cpp] TRY THIS! ---
**Author:** ![OJerrinO](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ojerrino/32/88716_2.png) [@OJerrinO](https://forums.unrealengine.com/u/OJerrinO)\ **Post date:** [November 23, 2021, 3:52am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/10 "2021-11-23T03:52:18Z")
there is an awesome amazing side effect that has happened twice for me! 😃 ALL OF MY BLUEPRINTS GOT DELETED ---
**Author:** ![slavslav](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@slavslav](https://forums.unrealengine.com/u/slavslav)\ **Post date:** [December 16, 2021, 2:06am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/11 "2021-12-16T02:06:19Z")
I’ve got the same crash issue here. After a bit of fiddling, I figured that it’s caused by the Quixel Bridge plug-in. Deleting the CachedAssetRegistry.bin seems to work for me ONLY if I also uninstall Bridge through the Epic Games Launcher – which means I can’t use Bridge. Oddly enough I could use Bridge for a day after installing UE5 before this started happening. Does anyone else have the same issue by any chance? I’d really like to keep using Bridge but I can’t find a way around this. ---
**Author:** ![Constantinesis](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Constantinesis](https://forums.unrealengine.com/u/Constantinesis)\ **Post date:** [January 6, 2022, 4:00pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/12 "2022-01-06T16:00:15Z")
Hello I am completely new to UE. I just installed UE5 and when I open the first project, it crashes after a few seconds. I get the following log error Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION reading address 0x0000000000000018 nvwgf2umx nvwgf2umx nvwgf2umx nvwgf2umx nvwgf2umx D3D12Core D3D12Core 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\_Core UnrealEditor\_RenderCore UnrealEditor\_Core UnrealEditor\_Core kernel32 ntdll I deleted the CachedAssetRegistry.bin but its still crashing. Could someone help me with this issue? ---
**Author:** ![Constantinesis](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Constantinesis](https://forums.unrealengine.com/u/Constantinesis)\ **Post date:** [January 6, 2022, 6:29pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/13 "2022-01-06T18:29:40Z")
I deleted the folder. It lasted a few seconds more and then i got a different error log Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION reading address 0xffffffffffffffff ---
**Author:** ![Constantinesis](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Constantinesis](https://forums.unrealengine.com/u/Constantinesis)\ **Post date:** [January 6, 2022, 9:01pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/14 "2022-01-06T21:01:31Z")
I think i found the solution! I restored the Global Settings from the Nvidia Control Panel to default and it does not crash anymore ! ---
**Author:** ![thricxy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@thricxy](https://forums.unrealengine.com/u/thricxy)\ **Post date:** [January 7, 2022, 1:41pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/15 "2022-01-07T13:41:29Z")
Exactly the same issue here! ---
**Author:** ![anon11180791](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anon11180791](https://forums.unrealengine.com/u/anon11180791)\ **Post date:** [January 15, 2022, 2:13pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/16 "2022-01-15T14:13:08Z")
I also have this same problem. i want to reinstall Epic games launcher , then verify Unreal engine 5. Hope it works ---
**Author:** ![anonymous\_user\_fb8283e31](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_fb8283e31](https://forums.unrealengine.com/u/anonymous_user_fb8283e31)\ **Post date:** [January 16, 2022, 2:16pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/17 "2022-01-16T14:16:26Z")
Hi, i haved the same problem. After some sessions on UE5, the soft become crashed without error detail. Then i noticed that when i removed the Bridge folder in the plug-in folder of UE5, the soft started. So for correct the problem : 1. Launch your project Unreal in UE5 (without Bridge folder in UE5 plug-in folder) 2. Open the plug-in window in UE5 interface and enable “Web Authentification Plug-in” and “Web Browser” 3. Close and add Bridge folder in UE5 plug-in folder 4. Launch your project 5. Enjoy ! 😉 ---
**Author:** ![thereallacas](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@thereallacas](https://forums.unrealengine.com/u/thereallacas)\ **Post date:** [January 27, 2022, 2:35am UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/18 "2022-01-27T02:35:23Z")
hi, having the same issue, any solutions? ---
**Author:** ![Echaminya](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/echaminya/32/1008422_2.png) [@Echaminya](https://forums.unrealengine.com/u/Echaminya)\ **Post date:** [April 5, 2022, 4:18pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/19 "2022-04-05T16:18:10Z")
This worked for me!!! Thank you soo much!!! ---
**Author:** ![DaveSwan](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@DaveSwan](https://forums.unrealengine.com/u/DaveSwan)\ **Post date:** [April 5, 2022, 11:08pm UTC](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776/20 "2022-04-05T23:08:27Z")
Thanks, This worked for me and saved me a bunch of time, I am sure! [Next page](https://forums.unrealengine.com/t/unreal-engine-5-crashes-on-start-up/232776.md?page=2)