40.30 | CANNOT Start the Game during UEFN Session

General Issues and Bug Reporting
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1

Summary

Cannot Start Game In Session

This new update has broke starting the game on my map.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

  • Open a project
  • Launch Session
  • Player loads into session
  • Click Start Game (in-game or uefn)

Expected Result

  • Starts Game

Observed Result

  • Crashes Session
  • Sends player back to lobby

Platform(s)

  • PC

Island Code

3958-3891-9613

Upload an image

Screenshot 2026-04-30 115311.png
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Screenshot 2026-04-30 172055.png
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Video

Additional Notes

Tried:

  • Disabled Revision Control
  • Disabled auto-start game

I can publish a private version; and I can launch that version in-game.
But I CANNOT start a game in the UEFN session

2

More Additional Notes

Error still occurs after trying these fixes:

  • Restarted my pc/editor
  • Compiled Verse
  • Committed Changes
  • Push Changes

Still cannot start the game :confused:

3

Im having these issues too

1 Like
4

This has been torture; a whole day of not being able to edit/publish/test

5

Yeah it lets me test for like a minute and then it crashes with the blue error screen

7

Just more information:

I have been having to edit and game test in this manner:

  • Edit in UEFN
  • Publish to private version
  • Launch private version in-game to test
    Rinse. Repeat.
8

This has been rough; ive released some amazing updates; but it takes me about 4 times longer to accomplish :frowning:

9

Hello! Can you tell me if you are still encountering this disconnect with the latest UEFN update?
If so, are you able to provide a new set of log files from both your UEFN editor and FN client sessions? We can use those to potentially investigate the root issue.

Thank you!

11

Hey Smokey, just checking in on this.

40.40 is out today, please let us know if it’s still happening once you update.

We also need the client and editor logs that were requested above to investigate fully - it’s very hard for us to triage without them.

12

I can confirm 40.40 has resolved this issue! Start Game now correctly operates as before!

2 Likes
13

Thanks for the update!

14

FORT-1096727 is ‘Closed’ as ‘Fixed’. The issue will be addressed in 40.40.