# Engine crashs randomly with Assertion failed.. when just closing any Blueprint

**URL:** <https://forums.unrealengine.com/t/engine-crashs-randomly-with-assertion-failed-when-just-closing-any-blueprint/1761176>\
**Category:** Feedback & Requests\
**Tags:** assertion-failed, fatal-error, crash-editor, unreal-engine, UE5, question\
**Created:** [March 18, 2024, 10:51pm UTC](https://forums.unrealengine.com/t/engine-crashs-randomly-with-assertion-failed-when-just-closing-any-blueprint/1761176 "2024-03-18T22:51:52Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![BDC\_Patrick](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/bdc_patrick/32/1104221_2.png) [@BDC\_Patrick](https://forums.unrealengine.com/u/BDC_Patrick)\
**Post date:** [March 18, 2024, 10:51pm UTC](https://forums.unrealengine.com/t/engine-crashs-randomly-with-assertion-failed-when-just-closing-any-blueprint/1761176/1 "2024-03-18T22:51:52Z")

</div>

Since 5.3 I got the Problem, that the whole Editor crashes fatally with this Error:

```auto
LoginId:5e2c7109436d056ad49530a6393c8e42
EpicAccountId:5d02987cf41f4199a7111db08716aee2

Assertion failed: IsValid() [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h] [Line: 1139]

UnrealEditor_UnrealEd!UEditorEngine::Tick() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:2020]
UnrealEditor_UnrealEd!UUnrealEdEngine::Tick() [D:\build\++UE5\Sync\Engine\Source\Editor\UnrealEd\Private\UnrealEdEngine.cpp:531]
UnrealEditor!FEngineLoop::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5825]
UnrealEditor!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:188]
UnrealEditor!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:118]
UnrealEditor!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:258]
UnrealEditor!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:298]
UnrealEditor!__scrt_common_main_seh() [D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

```

And I can’t find out, what the problem is…

Tried:  
Reinstall the Engine multiple times (8+ times…)  
Reinstall Visual Studio  
Verified Installation of Engine multiple times  
COMPLETELY reinstalled everything…

Nothing helps…

Does one know how to fix that? It’s so annoying… Cause it happens randomly from time to time… Even when trying to close a fresh and new blueprint…

---

<div class="post-metadata">

**Author:** ![BDC\_Patrick](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/bdc_patrick/32/1104221_2.png) [@BDC\_Patrick](https://forums.unrealengine.com/u/BDC_Patrick)\
**Post date:** [March 22, 2024, 2:52pm UTC](https://forums.unrealengine.com/t/engine-crashs-randomly-with-assertion-failed-when-just-closing-any-blueprint/1761176/2 "2024-03-22T14:52:27Z")

</div>

Pushing this…