Bug Report: UEFN Stuck on "Connecting..." – Cannot Launch Any Session

Summary

UEFN is completely unable to launch a session. On any project — including brand new, empty projects — clicking Launch Session causes the editor to hang indefinitely on “Connecting…”. This occurs on a fresh install with no Verse scripts, plugins, or modifications.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Steps to Reproduce

Fresh install of UEFN via Epic Games Launcher

Launch UEFN

Create a new blank project

Click Launch Session

Fortnite gets stuck on connecting… and is hung until you close Fortnite.

Expected Result

A session launches and the level loads into Fortnite.

Observed Result

UEFN becomes stuck on “Connecting…” and never progresses. Must be force-closed.

Platform(s)

windows

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Additional Notes

Log Errors (from UnrealEditorFortnite.log):

pgsql

[OSS] SessionJoin: Unable to get logged in user ID.
[OSS] GetUserAuthData failed: NotLoggedIn
[Session] Join result: Error

These errors appear consistently in every launch attempt, even in fresh scenes.

Fixed! What worked for me:

  1. Logged into a different Epic account in UEFN.,

  2. Logged back into my main account.,

  3. Went to Epic Account Settings → Password & Security → clicked “Sign Out Everywhere.”,

Sessions now launch normally.

Thank you for sharing the fix!

FORT-928893 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.