# I have a problem with UEFN launch

**URL:** <https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989>\
**Category:** Issues and Bug Reporting\
**Tags:** unreal-engine, fortnite-creative, unreal-editor-for-fortnite, editor, fortnite\
**Created:** [March 23, 2024, 9:41pm UTC](https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989 "2024-03-23T21:41:09Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![IKekich](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ikekich/32/914023_2.png) [@IKekich](https://forums.unrealengine.com/u/IKekich)\
**Post date:** [March 23, 2024, 9:41pm UTC](https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989/1 "2024-03-23T21:41:09Z")

</div>

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Other

### Summary

When I am starting UEFN I got an error that says: “Failed to open descriptor file ../../../FortniteGame/FortniteGame.uproject”. Firts of all, I don’t have any uproject file in that directory, and second, I downloaded Unreal Engine and it works just fine himself.  
I re-installed everything I have, Fortnite, UEFN, Epic launcher, nothing helped.

### Steps to Reproduce

Open UEFN - Application does not launch.

### Expected Result

Launch UEFN

### Observed Result

UEFN is not opening at all

### Platform(s)

PC

---

<div class="post-metadata">

**Author:** ![IKekich](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ikekich/32/914023_2.png) [@IKekich](https://forums.unrealengine.com/u/IKekich)\
**Post date:** [March 23, 2024, 11:39pm UTC](https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989/2 "2024-03-23T23:39:19Z")

</div>

Alright, some guy with nickname [Omniverse](https://dev.epicgames.com/community/profile/kxXGO/Omniverse) found a way how to fix this temporarily, until Epic will make an update, so here it is:

“Go to your install folder where you have Fortnite\_Studio. Copy everything inside there ctrl+a and ctrl+c and paste it inside the regular fortnite folder. Then with epic running in back launch UEFN from the UnrealEditorFortnite-Win64-Shipping.exe file under your install location at Fortnite\FortniteGame\Binaries\Win64”

---

<div class="post-metadata">

**Author:** ![SRxXOMICIDIOXx](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@SRxXOMICIDIOXx](https://forums.unrealengine.com/u/SRxXOMICIDIOXx)\
**Post date:** [March 24, 2024, 1:03pm UTC](https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989/3 "2024-03-24T13:03:44Z")

</div>

Which is the regular Fortnite folder?

---

<div class="post-metadata">

**Author:** ![Bug-Reporter](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/bug-reporter/32/997076_2.png) [@Bug-Reporter](https://forums.unrealengine.com/u/Bug-Reporter)\
**Post date:** [March 24, 2024, 4:31pm UTC](https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989/4 "2024-03-24T16:31:02Z")

</div>

The status of FORT-725031 incident has been moved from ‘Needs Triage’ to ‘Needs More Info’.

---

<div class="post-metadata">

**Author:** ![Flak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/flak/32/769441_2.png) [@Flak](https://forums.unrealengine.com/u/Flak)\
**Post date:** [March 25, 2024, 3:18pm UTC](https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989/5 "2024-03-25T15:18:39Z")

</div>

Sorry for the delay here, we’re checking into this! [Issue with New Installations of UEFN](https://forums.unrealengine.com/t/issue-with-newinstallations-of-uefn/1771613)

---

<div class="post-metadata">

**Author:** ![IKekich](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ikekich/32/914023_2.png) [@IKekich](https://forums.unrealengine.com/u/IKekich)\
**Post date:** [March 25, 2024, 5:34pm UTC](https://forums.unrealengine.com/t/i-have-a-problem-with-uefn-launch/1768989/6 "2024-03-25T17:34:17Z")

</div>

Go to Epic launcher library, press 3 dots on Fortnite, and there you can find a directory where the game was installed. The “Fortnite” folder by default lies at “Program Files/Epic Games/Fortnite”, so in short, you copy every single folder at “Fortnite\_studio” directory, and paste it into “Fortnite” folder.