# \[UEFN\] MODULE VALIDATION FAILED – download\_failure 404 – Module stuck

**URL:** <https://forums.unrealengine.com/t/uefn-module-validation-failed-download-failure-404-module-stuck/2702832>\
**Category:** Issues and Bug Reporting\
**Tags:** unreal-editor-for-fortnite, closed\
**Created:** [February 28, 2026, 6:13am UTC](https://forums.unrealengine.com/t/uefn-module-validation-failed-download-failure-404-module-stuck/2702832 "2026-02-28T06:13:05Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [February 28, 2026, 11:33pm UTC](https://forums.unrealengine.com/t/uefn-module-validation-failed-download-failure-404-module-stuck/2702832/2 "2026-02-28T23:33:32Z")

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hi @HASHCHUCHU

Due to power fail you need to verify UEFN/Fn install

[how to verify UEFN](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/5)

The next thing is to Launch menu → Validate all project fix any errors

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