# UEFN PUBLISH ERROR - Project Failed To Cook (See Message Log)

**URL:** <https://forums.unrealengine.com/t/uefn-publish-error-project-failed-to-cook-see-message-log/2668090>\
**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:** 1\
**Showing post:** 9

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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:** [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")

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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)

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