# Validation failed: Can not launch session - Error: Failed to find public assets **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** fortnite-creative, unreal-editor-for-fortnite, bug-report, fortnite\ **Created:** [July 9, 2025, 7:28pm UTC](https://forums.unrealengine.com/t/validation-failed-can-not-launch-session-error-failed-to-find-public-assets/2598761 "2025-07-09T19:28:40Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![davidpkami](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/davidpkami/32/1040403_2.png) [@davidpkami](https://forums.unrealengine.com/u/davidpkami)\ **Post date:** [July 9, 2025, 7:28pm UTC](https://forums.unrealengine.com/t/validation-failed-can-not-launch-session-error-failed-to-find-public-assets/2598761/1 "2025-07-09T19:28:40Z")
### Summary LogValkyrieSyncProject: Error: Failed to find public assets [Failed to read C:/Users/David/Documents/Fortnite Projects/BeachTycoon3/Content/ **ExternalActors** /BeachTycoon3/9/2D/CLTZ7AB9RFO9629AO8H1S1.uasset] LogValkyrieSyncProject: Display: Finished basic user validation with an internal error LogValkyrieSyncProject: Display: Profile SyncProject.Validate, 14.159182 LogValkyrieSyncProject: Display: Profile Begin SyncProject.Complete LogValkyrieSummary: Project BeachTycoon3 failed to update LogValkyrieActivityTracker: Warning: Upload → Fail Activity: BeachTycoon3 - Project validation failed LogValkyrieSyncProject: Display: Profile SyncProject.Complete, 0.020600 LogValkyrieSyncProject: Display: Profile SyncProject, 24.850420 LogValkyrieEditorAnalytics: Displaying Stats for Flow LogValkyrieEditorAnalytics: ========================= LogValkyrieEditorAnalytics: Flow=Play LogValkyrieEditorAnalytics: PlayFlow=28.251 LogValkyrieEditorAnalytics: ↳ PrepareProjectSourceData=28.251 LogValkyrieEditorAnalytics: ↳ ProjectUpload=24.851 LogValkyrieEditorAnalytics: ↳ SyncWithContentService=1.695 LogValkyrieEditorAnalytics: ↳ UpdateProjectMetadata=0.668 LogValkyrieEditorAnalytics: ↳ InitSyncModules=6.635 LogValkyrieEditorAnalytics: ↳ StageProjectModules=1.638 LogValkyrieEditorAnalytics: ↳ GatherFilesForValidation=0.000 LogValkyrieEditorAnalytics: ↳ DownloadPublishedVerseFiles=0.670 LogValkyrieEditorAnalytics: ↳ ValidateProject=13.490 LogValkyrieEditorAnalytics: ================================= LogSlate: Window ‘Unable to Play’ being destroyed Message dialog closed, result: Ok, title: Unable to Play, text: Validation failed LogValkyrie: Unable to play: Validation failed LogValkyrieFortniteEditorLiveEdit: Verbose: FValkyrieFortniteEditorLiveEdit::UploadEnd C:/Users/David/Documents/Fortnite Projects/BeachTycoon3/BeachTycoon3.uefnproject, EValkyrieSyncProjectState::Failed LogValkyrieFortniteEditorLiveEdit: Verbose: FValkyrieFortniteEditorLiveEdit::SetUploadRequired 1 LogValkyrieFortniteEditorLiveEdit: Verbose: FValkyrieFortniteEditorLiveEdit::SetTrackingUploadRequired 0 LogValkyrieRequestManagerEditor: OnProjectSyncCompleted: C:/Users/David/Documents/Fortnite Projects/BeachTycoon3/BeachTycoon3.uefnproject, EValkyrieSyncProjectState::Failed LogValkyrieActivityTracker: Warning: Upload → Fail Activity: UploadProjects - All uploads failed with errors LogSlate: Took 0.003133 seconds to synchronously load lazily loaded font ‘../../../Engine/Content/Slate/Fonts/DroidSansMono.ttf’ (77K) LogSlate: Took 0.005824 seconds to synchronously load lazily loaded font ‘../../../Engine/Content/Slate/Fonts/DroidSansFallback.ttf’ (3848K) LogSourceControl: Branch diff branch 0197ef7594de7b9194bc6fe28f993b18 revision de45ff05c1ae3fe78f04c4016c5bd51725984572121dafb3be65119217fdd9cc → branch e726318bbc3fd75ac8733a7e030cc35b revision 8eeadaa5da0782cbf97f223f35f8a2c7b9864df0e29db9fa79f4bcdff6c59011 LogSourceControl: Revision diff base 8eeadaa5da0782cbf97f223f35f8a2c7b9864df0e29db9fa79f4bcdff6c59011 source de45ff05c1ae3fe78f04c4016c5bd51725984572121dafb3be65119217fdd9cc target 8eeadaa5da0782cbf97f223f35f8a2c7b9864df0e29db9fa79f4bcdff6c59011 LogSourceControl: Calculating diff between base 494 → 8eeadaa5da0782cbf97f223f35f8a2c7b9864df0e29db9fa79f4bcdff6c59011 source 503 → de45ff05c1ae3fe78f04c4016c5bd51725984572121dafb3be65119217fdd9cc target 494 → 8eeadaa5da0782cbf97f223f35f8a2c7b9864df0e29db9fa79f4bcdff6c59011 LogSourceControl: Diff source branch revisions LogSourceControl: Sorting 93 source changes LogSourceControl: Diff target branch revisions LogSourceControl: Sorting 0 filtered target changes LogSourceControl: Found 93 changes on source branch, resulting in 0 filtered changes on target branch LogEOSSDK: LogEOS: Updating Product SDK Config, Time: 313.224121 LogEOSSDK: LogEOS: SDK Config Product Update Request Completed - No Change LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 314.558167, Update Interval: 325.432281 LogEOSSDK: LogEOS: Updating Product SDK Config, Time: 318.405609 LogEOSSDK: LogEOS: SDK Config Product Update Request Completed - No Change LogEOSSDK: LogEOS: ScheduleNextSDKConfigDataUpdate - Time: 319.740723, Update Interval: 330.685760 ### Please select what you are reporting on: Unreal Editor for Fortnite ### What Type of Bug are you experiencing? Stability ### Steps to Reproduce Just trying to launch a session ### Expected Result Session launched ### Observed Result Validation failed ### Platform(s) PC UEFN ### Island Code Not yet ---
**Author:** ![davidpkami](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/davidpkami/32/1040403_2.png) [@davidpkami](https://forums.unrealengine.com/u/davidpkami)\ **Post date:** [July 9, 2025, 7:30pm UTC](https://forums.unrealengine.com/t/validation-failed-can-not-launch-session-error-failed-to-find-public-assets/2598761/2 "2025-07-09T19:30:56Z")
I don´t find the button to attach the logs. Updating them to Google drive > **[LOGS - Google Drive](https://drive.google.com/drive/folders/1CGp5VDgBL5nVdYB4s2Ap_9aGbckVYr8d?usp=drive_link)** ---
**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:** [July 9, 2025, 10:01pm UTC](https://forums.unrealengine.com/t/validation-failed-can-not-launch-session-error-failed-to-find-public-assets/2598761/3 "2025-07-09T22:01:02Z")
[Asset Validation Issues - General / Issues and Bug Reporting - Epic Developer Community Forums](https://forums.unrealengine.com/t/asset-validation-issues/817504/14) ---
**Author:** ![davidpkami](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/davidpkami/32/1040403_2.png) [@davidpkami](https://forums.unrealengine.com/u/davidpkami)\ **Post date:** [July 10, 2025, 7:15am UTC](https://forums.unrealengine.com/t/validation-failed-can-not-launch-session-error-failed-to-find-public-assets/2598761/4 "2025-07-10T07:15:15Z")
I have a problem finding a public assets that does not exist in my experience LogValkyrieSyncProject: Error: Failed to find public assets [Failed to read C:/Users/David/Documents/Fortnite Projects/BeachTycoon3/Content/ **ExternalActors** /BeachTycoon3/9/2D/CLTZ7AB9RFO9629AO8H1S1.uasset] ---
**Author:** ![davidpkami](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/davidpkami/32/1040403_2.png) [@davidpkami](https://forums.unrealengine.com/u/davidpkami)\ **Post date:** [July 10, 2025, 8:29am UTC](https://forums.unrealengine.com/t/validation-failed-can-not-launch-session-error-failed-to-find-public-assets/2598761/5 "2025-07-10T08:29:06Z")
I just entered the folder and deleted that asset. I don´t know witch asset was and the problem is solved now, but this is not great as I am not sure witch asset does not exist anymore in the project. I remember that months ago I could see the asset in the Outliner, this was not the case Edit: ![imagen_2025-07-10_103246997](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/4/2/3425ccdc75a6b01384e43782b6a072b7a39e9234.png) I think is was a simple wooden fence, not even an asset made by us. This is type of stability is very dangerous and it should solved asap. We had luck that it was only one asset ---
**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\ **Post date:** [January 5, 2026, 7:28pm UTC](https://forums.unrealengine.com/t/validation-failed-can-not-launch-session-error-failed-to-find-public-assets/2598761/6 "2026-01-05T19:28:53Z")
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