# UEFN Crashing on start, how to fix it ?

**URL:** <https://forums.unrealengine.com/t/uefn-crashing-on-start-how-to-fix-it/1837024>\
**Category:** Issues and Bug Reporting\
**Tags:** unreal-engine, fortnite-creative, unreal-editor-for-fortnite, crash, question, fortnite\
**Created:** [May 2, 2024, 8:13pm UTC](https://forums.unrealengine.com/t/uefn-crashing-on-start-how-to-fix-it/1837024 "2024-05-02T20:13:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Noadubg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Noadubg](https://forums.unrealengine.com/u/Noadubg)\
**Post date:** [May 2, 2024, 8:13pm UTC](https://forums.unrealengine.com/t/uefn-crashing-on-start-how-to-fix-it/1837024/1 "2024-05-02T20:13:48Z")

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### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Other

### Summary

Error log :

Unhandled Exception: EXCEPTION\_INT\_DIVIDE\_BY\_ZERO

UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
UnrealEditorFortnite\_Win64\_Shipping  
kernel32  
ntdll

### Steps to Reproduce

Start UEFN

### Expected Result

Start UEFN

### Observed Result

Don’t start UEFN

### Platform(s)

PC

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<div class="post-metadata">

**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:** [May 2, 2024, 8:23pm UTC](https://forums.unrealengine.com/t/uefn-crashing-on-start-how-to-fix-it/1837024/2 "2024-05-02T20:23:10Z")

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hi @Noadubg ,

Possibly need to Verify the installation as in  
[urc.exe and urc.dll get flagged as Malware from Microsoft Defender - General / Issues and Bug Reporting - Epic Developer Community Forums (unrealengine.com)](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/5)

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**Author:** ![speedgate](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@speedgate](https://forums.unrealengine.com/u/speedgate)\
**Post date:** [May 2, 2024, 10:00pm UTC](https://forums.unrealengine.com/t/uefn-crashing-on-start-how-to-fix-it/1837024/3 "2024-05-02T22:00:14Z")

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Hello, I had the same problem , I fixed mine by backing up your files, then restore your computer. that fixed everything.

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**Author:** ![Noadubg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Noadubg](https://forums.unrealengine.com/u/Noadubg)\
**Post date:** [May 4, 2024, 11:50am UTC](https://forums.unrealengine.com/t/uefn-crashing-on-start-how-to-fix-it/1837024/4 "2024-05-04T11:50:01Z")

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If fixed itself when it was updated for starwars update.