Summary UEFN memory calculation consistently fails with ContentServiceFailure / module_not_found when retrieving MemoryManifest.json. The project uploads and private versions are created successfully, but publication is blocked because memory calculation data is unavailable. What Type of Bug are yo…

Same I cant start memory calculation i get the same error.. when i run claculation in an empty map it runs fine..

Same: Error from UnrealEditorFortnite.log LogValkyrieMemoryCalculation: Warning: Memory calculation failed: Valkyrie::MemoryCalculation::Errors::ContentServiceFailure: [Content service request failed: Could not find the requested resource, (errors.com.epicgames.content-service.module_not_found: “ho…

Any luck on this? Mine seems to be a FAB referenced asset pack I am using (made by Epic), but no direct errors are shown.

Any reply yet!? same iss same issue for me …

Go to this post and share your log files with the Dev to help get this bug fixed: [image] [Critical] Memory calculation fails after 43.00 Issues and Bug Reporting [2026.11.03-06.06.08:337][602]LogReferencedContentLoader: Downloading Referenced Content ‘Deserte…

UEFN Memory Calculation Failed – ContentServiceFailure / module_not_found – Publishing Blocked

General Issues and Bug Reporting (Unreal Engine)

TobyWanShinobiYT (TobyWanShinobiYT) November 3, 2026, 12:31am 6

Go to this post and share your log files with the Dev to help get this bug fixed: