# UEFN PUBLISH ERROR - Project Failed To Cook (See Message Log) **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** closed, fortnite-creative, unreal-editor-for-fortnite, fortnite\ **Created:** [October 23, 2025, 9:27pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090 "2025-10-23T21:27:10Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![MAJORKEYSLAYER](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@MAJORKEYSLAYER](https://forums.unrealengine.com/u/MAJORKEYSLAYER)\ **Post date:** [October 23, 2025, 9:27pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/1 "2025-10-23T21:27:10Z")
### Summary I usually like to publish a version of my maps through the PUBLISH option inside of the UEFN editor. Currently it is not completing the publishing process and giving me an error message that says - Project Failed To Cook ( See Attached Pictures) Ive tried it on a couple of projects and getting the same error on both. ### Please select what you are reporting on: Creative ### What Type of Bug are you experiencing? Other ### Steps to Reproduce Click on Project and Select Publish Let the Process begin and if it fails then the Fail message will pop up. ### Expected Result Project Failed To Cook (See Message Log) Error Message ### Observed Result Project Failed To Cook (See Message Log) Error Message ### Platform(s) All ### Upload an image ![Screenshot 2025-10-23 172029.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/b/9/8b9ecd614d93455217fe556cd778a7b02b279433.png) ![Screenshot 2025-10-23 172127.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/8/4/884061d661d6508b99030d30599ac1b9956d18cd.png) ![Screenshot 2025-10-23 171954.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/e/4/4/e44ad521910f9a4eb1235d698e00b313be28aec9.png) ---
**Author:** ![Zablabior](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/zablabior/32/1148291_2.png) [@Zablabior](https://forums.unrealengine.com/u/Zablabior)\ **Post date:** [October 23, 2025, 10:44pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/2 "2025-10-23T22:44:37Z")
We are having the same issue rn ---
**Author:** ![RDXKAKA](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@RDXKAKA](https://forums.unrealengine.com/u/RDXKAKA)\ **Post date:** [October 23, 2025, 11:02pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/3 "2025-10-23T23:02:03Z")
I am also getting the exact same error, please help. ---
**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:** [October 24, 2025, 12:57pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/5 "2025-10-24T12:57:49Z")
Is this still happening? ---
**Author:** ![DIANAMITE4](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@DIANAMITE4](https://forums.unrealengine.com/u/DIANAMITE4)\ **Post date:** [October 24, 2025, 1:24pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/6 "2025-10-24T13:24:41Z")
yes please ---
**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:** [October 24, 2025, 1:27pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/7 "2025-10-24T13:27:56Z")
Also tracking here: **[Can not publish iOS: Failed to prepare data](https://forums.unrealengine.com/t/can-not-publish-ios-failed-to-prepare-data/2668217)** ---
**Author:** ![ultranew\_b](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ultranew\_b](https://forums.unrealengine.com/u/ultranew_b)\ **Post date:** [October 26, 2025, 9:37pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/8 "2025-10-26T21:37:33Z")
same error here on PC ---
**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:** [October 29, 2025, 6:57pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/9 "2025-10-29T18:57:39Z")
FORT-1000365 has been ‘Closed’ as a duplicate of an existing known issue. Origin Issue: FORT-1000393, Origin Topic: [Can not publish iOS: Failed to prepare data](https://forums.unrealengine.com/t/can-not-publish-ios-failed-to-prepare-data/2668217) ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [April 21, 2026, 9:27pm UTC](https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090/10 "2026-04-21T21:27:52Z")
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