# UEFN crashes after the update **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** unreal-engine, unreal-editor-for-fortnite, fortnite\ **Created:** [June 8, 2025, 9:14pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353 "2025-06-08T21:14:34Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Lekipp](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Lekipp](https://forums.unrealengine.com/u/Lekipp)\ **Post date:** [June 8, 2025, 9:14pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/1 "2025-06-08T21:14:34Z")
Hi everyone, I updated UEFN, and now every time I launch it, it just crashes. I verified the files, reinstalled UEFN, updated my drivers, and deleted some UEFN saved data. But it still crashes with the same error: less CopyEdit ```auto Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x000001f8f9ff2004 UnrealEditorFortnite_Win64_Shipping UnrealEditorFortnite_Win64_Shipping kernel32 ntdll ``` Any help would be appreciated. ---
**Author:** ![Hexagon37](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Hexagon37](https://forums.unrealengine.com/u/Hexagon37)\ **Post date:** [June 9, 2025, 1:27am UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/2 "2025-06-09T01:27:47Z")
Im also having the same issue with the same error code. Ive tried similar workarounds to no avail. let me know if you find something that fixes it! ---
**Author:** ![Lekipp](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Lekipp](https://forums.unrealengine.com/u/Lekipp)\ **Post date:** [June 9, 2025, 7:07am UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/3 "2025-06-09T07:07:33Z")
Yes, write, write here if you find a solution. ---
**Author:** ![Lekipp](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Lekipp](https://forums.unrealengine.com/u/Lekipp)\ **Post date:** [June 11, 2025, 8:25pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/4 "2025-06-11T20:25:41Z")
reinstalled fortnite and uefn and the update came out, this error has not appeared now before that, of course, I had already reinstalled UEFN. ---
**Author:** ![BEKAzBECZKI](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BEKAzBECZKI](https://forums.unrealengine.com/u/BEKAzBECZKI)\ **Post date:** [June 12, 2025, 8:55pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/5 "2025-06-12T20:55:55Z")
Create a new local Windows account (e.g. “TestUEFN”) Log in, launch Epic Games Launcher Try launching UEFN If it works - it means that your local settings or registry is corrupted. ---
**Author:** ![BEKAzBECZKI](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BEKAzBECZKI](https://forums.unrealengine.com/u/BEKAzBECZKI)\ **Post date:** [June 12, 2025, 9:43pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/6 "2025-06-12T21:43:23Z")
## Step-by-step: How to Fix UEFN Crashing on Your Windows User Account If UEFN crashes **right before project selection** or immediately on launch — especially **after a recent update** — and works fine on a different Windows account, your user profile is likely corrupted or contains broken settings/cache. Follow these steps to clean and reset everything that may be causing the crash: * * * ### 1. **Delete local UEFN and Epic Games cache/config files** On the Windows account where UEFN is crashing: Delete (or move to your desktop) the following folders: ```auto C:\Users\YourUsername\AppData\Local\UnrealEditorFortnite C:\Users\YourUsername\AppData\Local\EpicGamesLauncher C:\Users\YourUsername\AppData\Roaming\Epic C:\Users\YourUsername\AppData\Roaming\Unreal Engine ``` > 🔐 If you don’t see the `AppData` folder, paste the path directly into File Explorer. * * * ### 2. **Clean up UEFN-related registry entries** > ⚠ Caution: Only do this if you’re comfortable using the Windows Registry Editor. 1. Press `Win + R`, type `regedit`, and hit Enter. 2. Navigate to: ```auto HKEY_CURRENT_USER\Software\Epic Games HKEY_CURRENT_USER\Software\Unreal Engine ``` 1. If you see anything related to `UnrealEditorFortnite`, right-click and **delete** it. > ✅ Optional: Right-click → “Export” to back up the key before deleting, just in case. * * * ### 3. **Clear DirectX and shader cache** UEFN relies heavily on shaders, and corrupted shader cache can cause crashes. Delete this folder: ```auto C:\Users\YourUsername\AppData\Local\D3DSCache ``` * * * ### 4. **Reset permissions on Epic Games folders** Sometimes Epic’s temporary files get incorrect permissions (especially if you ran the launcher as Admin or moved data manually). 1. Open this folder: ```auto C:\ProgramData\Epic ``` 1. Right-click \> Properties \> Security \> Edit \> Make sure **your user account has Full Control** * * * ### 5. **Fully reinstall Epic Games Launcher and UEFN (on the crashing account)** 1. Uninstall **Epic Games Launcher** completely. 2. Manually delete leftover folders: ```auto C:\Program Files\Epic Games C:\Users\YourUsername\AppData\Local\EpicGamesLauncher ``` 1. Download and reinstall the launcher from: [https://store.epicgames.com/en/download](https://store.epicgames.com/en/download) 2. Reinstall UEFN from the launcher once it’s up. * * * ### 6. **(Optional) Remove or isolate old UEFN projects** Sometimes corrupted files in old projects can crash the editor. Move old projects out of this folder: ```auto C:\Users\YourUsername\Documents\Unreal Projects\ ``` Start UEFN again with no projects present, and try creating a new one from scratch. I hope this helps someone because if not the only option left is: reinstalling Windows. ---
**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\ **Post date:** [June 13, 2025, 10:03am UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/7 "2025-06-13T10:03:33Z")
hi all, The developer in another pos found the answer. Clean Boot your PC [[Major] UEFN Won’t Launch after newest patch still- Stuck on “90% Logging In” running for over 10 hours - General / Issues and Bug Reporting - Epic Developer Community Forums](https://forums.unrealengine.com/t/major-uefn-wont-launch-after-newest-patch-still-stuck-on-90-logging-in-running-for-over-10-hours/2547104/7) [How to perform a clean boot in Windows - Microsoft Support](https://support.microsoft.com/en-us/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd) Something was blocking UEFN ---
**Author:** ![GTOGIVETHEMONE](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/gtogivethemone/32/1096103_2.png) [@GTOGIVETHEMONE](https://forums.unrealengine.com/u/GTOGIVETHEMONE)\ **Post date:** [June 13, 2025, 12:22pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/8 "2025-06-13T12:22:22Z")
I get when launching session fortnite crashes sometimes ---
**Author:** ![Hexagon37](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Hexagon37](https://forums.unrealengine.com/u/Hexagon37)\ **Post date:** [June 19, 2025, 7:41pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/9 "2025-06-19T19:41:35Z")
It was fixed around a week ago, but its back now with the most recent update 😑 ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [December 5, 2025, 9:14pm UTC](https://forums.unrealengine.com/t/uefn-crashes-after-the-update/2547353/10 "2025-12-05T21:14:42Z")
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