Topics tagged assertion-failed

Topic	Replies	Views	Activity
Assertion Failed Blueprint Blueprint , question , unreal-engine , sync , assertion-failed	2	79	December 31, 2025
UE4.26 Niagara Assertion Failed Crash Randomly FX question , Particles , unreal-engine , assertion-failed , Niagara	18	5323	October 7, 2025
Assertion failed: bUncompressMemorySucceeded Getting Started & Setup question , error , unreal-engine , Map , assertion-failed	8	2882	February 22, 2025
UE 5.3 -- Assertion failed: Index == TypeIndex Getting Started & Setup question , crash , unreal-engine , index , crashing , crash-on-launch , assertion-failed , crash-at-startup , UE-5	33	19168	February 4, 2025
Game crash with launch on mobile Mobile question , unreal-engine , opengl , crash-on-launch , assertion-failed , mobile-device	2	680	January 19, 2016
Getting strange error on dedicated server (Assertion failed: NetGUID.IsDynamic()) Multiplayer & Networking question , crash , Multiplayer , Replication , dedicated-server , unreal-engine , assertion-failed	11	1507	December 20, 2024
[SOLVED] Assertion failed: Mesh && Mesh->GetRenderData() Platform & Builds unreal-engine , build-failed , assertion-failed	5	2188	October 30, 2024
Lightmass static lightning timed-out, asserts mismatch in task counting Rendering UE4-23 , question , unreal-engine , Lightmap , assertion-failed , lightmass-crash , static-lighting	5	1682	October 2, 2024
Assertion failed: UploadBufferSize >= UploadBytes crash Programming & Scripting question , crash , unreal-engine , assertion-failed	0	89	June 21, 2024
CumulativeLODSizes Assertion Failed error in packaged build Platform & Builds question , unreal-engine , assertion-failed	0	101	May 12, 2024
Vulkan RHI causing regular engine crash. Assertion failed error. Rendering question , crashes , error , unreal-engine , assertion-failed , vulkan	7	6038	April 4, 2024
Engine crashs randomly with Assertion failed.. when just closing any Blueprint Feedback & Requests question , unreal-engine , crash-editor , assertion-failed , fatal-error , UE5	1	257	March 22, 2024
Assertion failed: Actor->Brush->RootOutside Platform & Builds question , unreal-engine , assertion-failed	2	665	February 23, 2024
Un5 is crashing on start a project. Getting Started & Setup question , crash , package , unreal-engine , assertion-failed	2	200	February 18, 2024
Assertion failed: RecursionNotAllowed.Increment() == 1 Platform & Builds question , crashes , unreal-engine , assertion-failed	35	5460	September 7, 2023
Assertion Failed Crash: SerializeNum Platform & Builds question , unreal-engine , serialization , assertion-failed	2	1283	July 27, 2023
Lightmass crashed: Assertion failed and more Rendering question , crash , Lightmass , unreal-engine , assertion-failed	22	9826	May 19, 2023
Feature Request: Specify Problem Variable/Array In "Assertion Failed: Index > ArrayNum" Error Feedback & Requests crash , unreal-engine , Array , assertion-failed	0	292	February 18, 2023
UE5.1 Editor crash on Lightmass build: Assertion failed in NaniteMaterials.h Rendering question , Lightmass , unreal-engine , baked-lighting , assertion-failed , lightmass-crash , UE-5	0	896	January 11, 2023
Assertion Failed: AsyncLoading.cpp, Line 3710 Platform & Builds question , unreal-engine , fail , assertion-failed , win64	14	7207	August 20, 2022
Pixel Streaming Demo not working. Assertion Failed: Result == NV_ENC_SUCCESS Platform & Builds question , demo , unreal-engine , assertion-failed	3	2795	August 11, 2022
UnrealEditor keeps 4.26.2 keeps crashing on startup while loading assets, says "assertion failed" Pipeline & Plugins question , editor , Assets , unreal-engine , assertion-failed	1	655	August 8, 2022
When play level in editor: Error: Runnable thread TaskGraphThreadNP 0 crashed Character & Animation question , UE4 , crash , unreal-engine , assertion-failed , UE4-14	1	1297	August 1, 2022
Assertion failed on OnUnmountPak.Execute() C++ question , CPP , unreal-engine , dlc , patch , assertion-failed , UE4-15	3	1866	May 18, 2022
Ue4.26.1 Assertion failed: launch to android device (Samsung galaxy on8 ) Mobile question , unreal-engine , assertion-failed	2	1417	April 21, 2022
Project crashes when transforming metahuman Cinematics & Media Sequencer , question , crash , unreal-engine , Retargeting , assertion-failed , metahuman	1	1065	April 4, 2022
Packaging failed due to Assertion Failed ClassData Platform & Builds UE4-24 , unreal-engine , assertion-failed , Packaging-Error , critical-error	0	561	February 16, 2022
Assertion failed: Offset >= 0 && BytesToRead > 0 Platform & Builds question , unreal-engine , assertion-failed	4	2282	December 6, 2021
My UE4 editor keeps crashing on start up Platform & Builds question , unreal-engine , assertion-failed	3	745	November 27, 2021
Assertion failed? Platform & Builds question , unreal-engine , assertion-failed	0	806	November 19, 2021