# \[LAUNCHING SESSION\] - MAJOR Issue

**URL:** <https://forums.unrealengine.com/t/launching-session-major-issue/1978593>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, fortnite\
**Created:** [August 16, 2024, 2:09pm UTC](https://forums.unrealengine.com/t/launching-session-major-issue/1978593 "2024-08-16T14:09:58Z")\
**Posts on this page:** 1\
**Showing post:** 17

<div class="post-metadata">

**Author:** ![m-neco7](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@m-neco7](https://forums.unrealengine.com/u/m-neco7)\
**Post date:** [August 16, 2024, 6:50pm UTC](https://forums.unrealengine.com/t/launching-session-major-issue/1978593/17 "2024-08-16T18:50:45Z")

</div>

> [@QuestBoxFN](#):
>
> I tried it already, but it had no effect.  
> After I changed it to match what it says, no errors were given when launching, but while downloading the project inside Fortnite while waiting in ‘the box’, the session goes back to Fortnite lobby after some time and UEFN displays “Session disconnected”.

**I found the cause! Any of the Niagaras present in the project were adversely affected!  
After deleting all the Niagara in the project, the session loaded!**

---

_[View the full topic](https://forums.unrealengine.com/t/launching-session-major-issue/1978593)._