# Unable to Launch in Session 

**URL:** <https://forums.unrealengine.com/t/unable-to-launch-in-session/2348854>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, editor, fortnite\
**Created:** [February 21, 2025, 4:12pm UTC](https://forums.unrealengine.com/t/unable-to-launch-in-session/2348854 "2025-02-21T16:12:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Craxii](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Craxii](https://forums.unrealengine.com/u/Craxii)\
**Post date:** [February 21, 2025, 4:12pm UTC](https://forums.unrealengine.com/t/unable-to-launch-in-session/2348854/1 "2025-02-21T16:12:43Z")

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### Summary

Whenever I click Launch in session it stays there for a long period of time till a error message pops up saying “Failed to create module version Connection to the server failed.”  
Output Logs:  
LogOnline: Warning: OSS: Http Unexpected Result: HttpResult: 0 Code: 0 Error: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure  
LogValkyrieSyncProject: Error: CreateModuleVersion error: Failure ErrorCode=errors.com.epicgames.online.generic.connection\_failure, Message=Connection to the server failed., Raw=connection\_failure

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Matchmaking

### Steps to Reproduce

I’m not sure how exactly this has happened, has yesterday it was working perfectly fine after the update, I launched in to playtest one last time but it came up with the error.  
I tried even using snapshots, different PC, different account etc nothing seems to work

### Expected Result

It should just start the matchmaking, instead it’s stuck saying server failed not letting me launch in at all…

### Observed Result

It should’ve just started by clicking the “Launch in session”, in which it didn’t

### Platform(s)

PCs - Windows 11 through updated UEFN & Fortnite

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**Author:** ![R-gamez\_official](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/r-gamez_official/32/1023044_2.png) [@R-gamez\_official](https://forums.unrealengine.com/u/R-gamez_official)\
**Post date:** [February 21, 2025, 4:40pm UTC](https://forums.unrealengine.com/t/unable-to-launch-in-session/2348854/2 "2025-02-21T16:40:37Z")

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issue is assigned for someone to fix [Does anyone know why I have been unable to load into my session in UEFN since Chapter 6 started? I have been working on this map for a long while now and don’t want to lose it to errors like this. Help would be greatly appreciated! - General / Issues and Bug Reporting - Epic Developer Community Forums](https://forums.unrealengine.com/t/does-anyone-know-why-i-have-been-unable-to-load-into-my-session-in-uefn-since-chapter-6-started-i-have-been-working-on-this-map-for-a-long-while-now-and-dont-want-to-lose-it-to-errors-like-this-help-would-be-greatly-appreciated/2178806/5)

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**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:** [February 26, 2025, 12:07am UTC](https://forums.unrealengine.com/t/unable-to-launch-in-session/2348854/4 "2025-02-26T00:07:45Z")

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FORT-864711 has been ‘Closed’. We’re unable to reproduce this issue.

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**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [August 20, 2025, 4:13pm UTC](https://forums.unrealengine.com/t/unable-to-launch-in-session/2348854/5 "2025-08-20T16:13:30Z")

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