# 40.30 | CANNOT Start the Game during UEFN Session **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** fortnite-creative, unreal-editor-for-fortnite, fixed, fortnite\ **Created:** [April 30, 2026, 10:30pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299 "2026-04-30T22:30:21Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![SmokeyLlama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/smokeyllama/32/1100295_2.png) [@SmokeyLlama](https://forums.unrealengine.com/u/SmokeyLlama)\ **Post date:** [April 30, 2026, 10:30pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/1 "2026-04-30T22:30:21Z")
### 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](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/d/6/ad652c4094b76b0c46be9944600ec39802c3c939.png) ![Screenshot 2026-04-30 172055.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/a/b/aab0b0744c8e007b1ae08231076de6a6a6978afa.png) ### Video > **[Video Unavailable](https://streamable.com/02kq72)** > > This video is unavailable. ### 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 ---
**Author:** ![SmokeyLlama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/smokeyllama/32/1100295_2.png) [@SmokeyLlama](https://forums.unrealengine.com/u/SmokeyLlama)\ **Post date:** [April 30, 2026, 10:46pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/2 "2026-04-30T22:46:52Z")
### 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 😕 ---
**Author:** ![EV\_WAKA](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@EV\_WAKA](https://forums.unrealengine.com/u/EV_WAKA)\ **Post date:** [April 30, 2026, 11:14pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/3 "2026-04-30T23:14:58Z")
Im having these issues too ---
**Author:** ![SmokeyLlama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/smokeyllama/32/1100295_2.png) [@SmokeyLlama](https://forums.unrealengine.com/u/SmokeyLlama)\ **Post date:** [May 1, 2026, 1:34am UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/4 "2026-05-01T01:34:56Z")
This has been torture; a whole day of not being able to edit/publish/test ---
**Author:** ![EV\_WAKA](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@EV\_WAKA](https://forums.unrealengine.com/u/EV_WAKA)\ **Post date:** [May 1, 2026, 3:51am UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/5 "2026-05-01T03:51:30Z")
Yeah it lets me test for like a minute and then it crashes with the blue error screen ---
**Author:** ![SmokeyLlama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/smokeyllama/32/1100295_2.png) [@SmokeyLlama](https://forums.unrealengine.com/u/SmokeyLlama)\ **Post date:** [May 1, 2026, 6:07pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/7 "2026-05-01T18:07:46Z")
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. ---
**Author:** ![SmokeyLlama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/smokeyllama/32/1100295_2.png) [@SmokeyLlama](https://forums.unrealengine.com/u/SmokeyLlama)\ **Post date:** [May 4, 2026, 8:10pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/8 "2026-05-04T20:10:23Z")
This has been rough; ive released some amazing updates; but it takes me about 4 times longer to accomplish ☚ ---
**Author:** ![Ghost\_Rush](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ghost_rush/32/750342_2.png) [@Ghost\_Rush](https://forums.unrealengine.com/u/Ghost_Rush)\ **Post date:** [May 8, 2026, 10:29pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/9 "2026-05-08T22:29:21Z")
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! ---
**Author:** ![Dallan-MT](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/dallan-mt/32/1149461_2.png) [@Dallan-MT](https://forums.unrealengine.com/u/Dallan-MT)\ **Post date:** [May 14, 2026, 9:24am UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/11 "2026-05-14T09:24:42Z")
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. > [@How to get your Fortnite logs](https://forums.unrealengine.com/t/how-to-get-your-fortnite-logs/682382): > > At times, we will ask you to send us your logs when you’re having an issue in UEFN. Here is how to do that: UEFN Logs Exit Fortnite. Click on Start or press the Windows Key + R. Type \AppData\Local\UnrealEditorFortnite\Saved\Logs and press Enter. Zip your Logs folder and attach the zip file to your reply. To find UEFN Logs while working in UEFN: Click “Output Log” at the bottom of the window. Click on “Setting” at the top right of the window Click “Open Source Location” Zip your Logs folder… ---
**Author:** ![SmokeyLlama](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/smokeyllama/32/1100295_2.png) [@SmokeyLlama](https://forums.unrealengine.com/u/SmokeyLlama)\ **Post date:** [May 15, 2026, 8:13pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/12 "2026-05-15T20:13:39Z")
I can confirm 40.40 has resolved this issue! Start Game now correctly operates as before! ---
**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:** [May 21, 2026, 11:32am UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/13 "2026-05-21T11:32:16Z")
Thanks for the update! ---
**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:** [May 21, 2026, 12:01pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/14 "2026-05-21T12:01:19Z")
FORT-1096727 is ‘Closed’ as ‘Fixed’. The issue will be addressed in 40.40. ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [October 27, 2026, 10:30pm UTC](https://forums.unrealengine.com/t/40-30-cannot-start-the-game-during-uefn-session/2719299/15 "2026-10-27T22:30:31Z")
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