# PlatformCook Error while loading into a UEFN session **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** bug, joining-session, crash, unreal-editor-for-fortnite, fortnite, Cooking-Failed\ **Created:** [January 11, 2025, 12:18am UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433 "2025-01-11T00:18:34Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Volviik](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/volviik/32/1040867_2.png) [@Volviik](https://forums.unrealengine.com/u/Volviik)\ **Post date:** [January 11, 2025, 12:18am UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/1 "2025-01-11T00:18:34Z")
### Summary I am unable to launch a session on Windows. When launching a session on my current project, everything goes as expected but after waiting at least 10 minutes, I receive an error message informing me that on the Windows Platform, the cook was a failure, without any other explanation… and I remain stuck in the Hub without ever landing in my session. I restarted at least 40 sessions on PC and nothing works, but It works perfectly if I launch a session on Switch & Iphone. ### Please select what you are reporting on: Unreal Editor for Fortnite ### What Type of Bug are you experiencing? Other ### Steps to Reproduce -Launch a session on PC (Windows) -Wait at least 10min in the hub for the error PlatformCook ### Expected Result I should be able to join my session without a problem. ### Observed Result I get this error without any explanations : PlatformCook: Error: We hit an error while cooking this content PlatformCook: Error: errors.com.epicgames.content-service.cook\_failure PlatformCook: Error: CookJobId:839be2f6-ac78-4b81-8d53-b1df48791d20 PlatformCook: Error: An error occurred while communicating with the game servers (failed to cook module 70ed6c1e-43a7-394b-3852-3284d8506f76 (artifact 198814d4-5771-49a5-b520-f47b564f7464:pc) (cookJobId 839be2f6-ac78-4b81-8d53-b1df48791d20) with error code errors.com.epicgames.cook.timeout). ### Platform(s) windows only ### Island Code N/A ### Upload an image ![Capture d'écran 2025-01-11 004240.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/7/9/77960cce8ddb847f6547f6f3287205ab355752f3.png) ![Capture d'écran 2025-01-11 004307.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/a/5/1a580a3299b0052c8488d370d37060970a3564ac.png) ![SessionLaunchFailed.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/b/e/dbe5a84cb86a0a17ae61a17c41486b4fd8676e75.png) ### Additional Notes After looking at several other posts on the forum, I think I might have an invalid asset somewhere in my project that make me not able to reach a session on PC (Windows), only with this project. However on the first versions of my project I had no problem launching a session while now it is always the case. Please help me find the problem, thank you! All my drivers are up to date, and I have verified my UEFN/Fortnite files. ---
**Author:** ![mobifruit](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mobifruit/32/985104_2.png) [@mobifruit](https://forums.unrealengine.com/u/mobifruit)\ **Post date:** [January 11, 2025, 2:03pm UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/2 "2025-01-11T14:03:21Z")
Take another look at your Message Log in category Asset Check specifically. Please post those loglines or screenshot as well here. I’m curious if you ran into similar or same issue as I have for about a month now… ---
**Author:** ![CroakyJake12](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/croakyjake12/32/1014998_2.png) [@CroakyJake12](https://forums.unrealengine.com/u/CroakyJake12)\ **Post date:** [January 11, 2025, 5:58pm UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/3 "2025-01-11T17:58:58Z")
I’ve experienced the exact same issue, my project is trying to reference a fort playset that isn’t there ---
**Author:** ![TheMayorOfMeta](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/themayorofmeta/32/710225_2.png) [@TheMayorOfMeta](https://forums.unrealengine.com/u/TheMayorOfMeta)\ **Post date:** [March 8, 2025, 9:14pm UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/4 "2025-03-08T21:14:37Z")
Did this ever get resolved? Lot’s of people still running into this error and still no fix. ---
**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:** [March 19, 2025, 9:51pm UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/6 "2025-03-19T21:51:36Z")
FORT-872258’s status has changed to ‘Ready for QA’. A member of the QA department is investigating the issue. ---
**Author:** ![zyless](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/zyless/32/1039346_2.png) [@zyless](https://forums.unrealengine.com/u/zyless)\ **Post date:** [April 28, 2025, 8:05pm UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/7 "2025-04-28T20:05:02Z")
Hey, does anyone have a solution to this problem? ---
**Author:** ![TheMayorOfMeta](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/themayorofmeta/32/710225_2.png) [@TheMayorOfMeta](https://forums.unrealengine.com/u/TheMayorOfMeta)\ **Post date:** [May 27, 2025, 2:14pm UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/8 "2025-05-27T14:14:48Z")
We finally figured it out. The download memory limit of 400mb, if you go over it’ll refuse to open. ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [July 10, 2025, 12:19am UTC](https://forums.unrealengine.com/t/platformcook-error-while-loading-into-a-uefn-session/2270433/9 "2025-07-10T00:19:30Z")
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