# \[v40.00\] Cannot launch session - MODULE\_NOT\_FOUND on Epic content-service

**URL:** <https://forums.unrealengine.com/t/v40-00-cannot-launch-session-module-not-found-on-epic-content-service/2709117>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, bug-report, fortnite\
**Created:** [March 26, 2026, 12:41pm UTC](https://forums.unrealengine.com/t/v40-00-cannot-launch-session-module-not-found-on-epic-content-service/2709117 "2026-03-26T12:41:40Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![need\_moneyy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@need\_moneyy](https://forums.unrealengine.com/u/need_moneyy)\
**Post date:** [March 26, 2026, 12:41pm UTC](https://forums.unrealengine.com/t/v40-00-cannot-launch-session-module-not-found-on-epic-content-service/2709117/1 "2026-03-26T12:41:40Z")

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### Summary

Since the v40.00 update, I am unable to launch any session in UEFN. The editor returns the following error in the output log:  
LogValkyrieSyncProject: Error: Failed to Query project dependency API: Failure ErrorCode=errors.com.epicgames.content-service.MODULE\_NOT\_FOUND, Message=Could not find the requested resource., Raw={ “host”: “[content-service.bfda.live.use1a.on.epicgames.com](http://content-service.bfda.live.use1a.on.epicgames.com)”, “method”: “GET”, “path”: “/api/content/v4/module/dff8b3b9-491a-074d-55a7-949d4e1c4700/version/2/staged-files/public/api.json”, “errorCode”: “errors.com.epicgames.content-service.MODULE\_NOT\_FOUND”, “errorMessage”: “Could not find the requested resource” }

### Please select what you are reporting on:

Unreal Editor for Fortnite

### What Type of Bug are you experiencing?

Live Edit

### Steps to Reproduce

Open any UEFN project  
Click “Launch Session”  
Error appears immediately in the output log, session never starts

### Expected Result

Lauching the session and get it to the game

### Observed Result

errors/ i cant launch the game

### Platform(s)

windows

### Island Code

None

### Additional Notes

Please help me

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<div class="post-metadata">

**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:** [March 26, 2026, 11:56pm UTC](https://forums.unrealengine.com/t/v40-00-cannot-launch-session-module-not-found-on-epic-content-service/2709117/2 "2026-03-26T23:56:36Z")

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hi @need_moneyy

Please can you try verify your installation as in past this has been the problem

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

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**Author:** ![need\_moneyy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@need\_moneyy](https://forums.unrealengine.com/u/need_moneyy)\
**Post date:** [March 27, 2026, 5:23pm UTC](https://forums.unrealengine.com/t/v40-00-cannot-launch-session-module-not-found-on-epic-content-service/2709117/3 "2026-03-27T17:23:22Z")

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Thank you for your answer but i already did that and its not working

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**Author:** ![Kamyker](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/kamyker/32/1194621_2.png) [@Kamyker](https://forums.unrealengine.com/u/Kamyker)\
**Post date:** [April 30, 2026, 1:03pm UTC](https://forums.unrealengine.com/t/v40-00-cannot-launch-session-module-not-found-on-epic-content-service/2709117/4 "2026-04-30T13:03:12Z")

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I have the same issue, my project id: 0659d385-4f8e-594d-ce8a-d2a28e6cd9f8

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**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [September 22, 2026, 12:42pm UTC](https://forums.unrealengine.com/t/v40-00-cannot-launch-session-module-not-found-on-epic-content-service/2709117/5 "2026-09-22T12:42:07Z")

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