5.6.1 crashing in a weird way

Version 5.6.1
OS - Win 11

When I press “ Refresh Platform Status “ it’s getting crashed and for binary version of engine it’s not getting crash although SDK are in querying mode but not setting up. Is this happening for me anyone facing the issue ?

Script Stack (0 frames) :

[2025.11.04-17.16.42:579][263]LogWindows: Error: appError called: Assertion failed: (!FPlatformProcess::SupportsMultithreading()) || (!bIsRunning) [File:A:\UE56_Source\Engine\Source\Runtime\Core\Private\Misc\MonitoredProcess.cpp] [Line: 108]

[2025.11.04-17.16.42:579][263]LogWindows: Windows GetLastError: The operation completed successfully. (0)
[2025.11.04-17.16.56:339][263]LogWindows: Could not start crash report client using ../../../Engine/Binaries/Win64/CrashReportClientEditor-Win64-Debug.exe
[2025.11.04-17.16.56:339][263]LogMemory: Platform Memory Stats for WindowsEditor
[2025.11.04-17.16.56:339][263]LogMemory: Process Physical Memory: 3677.06 MB used, 10461.87 MB peak
[2025.11.04-17.16.56:339][263]LogMemory: Process Virtual Memory: 6649.55 MB used, 13100.48 MB peak
[2025.11.04-17.16.56:339][263]LogMemory: Physical Memory: 9656.16 MB used, 6431.98 MB free, 16088.14 MB total
[2025.11.04-17.16.56:339][263]LogMemory: Virtual Memory: 17929.02 MB used, 24783.12 MB free, 42712.14 MB total
[2025.11.04-17.16.56:339][263]LogTurnkeySupport: Completed device detection: Code = 1
[2025.11.04-17.16.56:339][263]Message dialog closed, result: Ok, title: The UE-TP56 Editor has crashed and will close, text: Assertion failed: (!FPlatformProcess::SupportsMultithreading()) || (!bIsRunning) [File:A:\UE56_Source\Engine\Source\Runtime\Core\Private\Misc\MonitoredProcess.cpp] [Line: 108]

[2025.11.04-17.16.56:339][263]LogWindows: Error: === Critical error: ===
[2025.11.04-17.16.56:339][263]LogWindows: Error:
[2025.11.04-17.16.56:340][263]LogWindows: Error: Assertion failed: (!FPlatformProcess::SupportsMultithreading()) || (!bIsRunning) [File:A:\UE56_Source\Engine\Source\Runtime\Core\Private\Misc\MonitoredProcess.cpp] [Line: 108]
[2025.11.04-17.16.56:340][263]LogWindows: Error:
[2025.11.04-17.16.56:340][263]LogWindows: Error:
[2025.11.04-17.16.56:340][263]LogWindows: Error:
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd53933188 UnrealEditor-Core.dll!FDebug::CheckVerifyFailedImpl2() [A:\UE56_Source\Engine\Source\Runtime\Core\Private\Misc\AssertionMacros.cpp:728]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd53a1c6fb UnrealEditor-Core.dll!FMonitoredProcess::GetFullOutputWithoutDelegate() [A:\UE56_Source\Engine\Source\Runtime\Core\Private\Misc\MonitoredProcess.cpp:108]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffdad4b7114 UnrealEditor-TurnkeySupport.dll!``FTurnkeySupportModule::UpdateSdkInfo’::2'::<lambda_3>::operator()'::2’::<lambda_1>::operator()() [A:\UE56_Source\Engine\Source\Editor\TurnkeySupport\Private\TurnkeySupportModule.cpp:2734]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd535fbbd0 UnrealEditor-Core.dll!TGraphTask::ExecuteTask() [A:\UE56_Source\Engine\Source\Runtime\Core\Public\Async\TaskGraphInterfaces.h:706]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd53627c02 UnrealEditor-Core.dll!UE::Tasks::Private::FTaskBase::TryExecuteTask() [A:\UE56_Source\Engine\Source\Runtime\Core\Public\Tasks\TaskPrivate.h:527]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd5361ac9f UnrealEditor-Core.dll!FNamedTaskThread::ProcessTasksNamedThread() [A:\UE56_Source\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:779]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd5361b31e UnrealEditor-Core.dll!FNamedTaskThread::ProcessTasksUntilQuit() [A:\UE56_Source\Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:668]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd53c03abc UnrealEditor-Core.dll!UE::Tasks::Private::TryWaitOnNamedThread() [A:\UE56_Source\Engine\Source\Runtime\Core\Private\Tasks\TaskPrivate.cpp:319]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd53c0466f UnrealEditor-Core.dll!UE::Tasks::Private::FTaskBase::WaitWithNamedThreadsSupport() [A:\UE56_Source\Engine\Source\Runtime\Core\Private\Tasks\TaskPrivate.cpp:220]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x000001e84b120ea3 UnrealEditor-MassEntityEditor.dll!UMassEntityEditorSubsystem::Tick() [A:\UE56_Source\Engine\Source\Editor\MassEntityEditor\Private\MassEntityEditorSubsystem.cpp:173]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd50b5e76b UnrealEditor-UnrealEd.dll!UE::Core::Private::Function::TFunctionRefCaller<FTickableEditorObject::TickObjects'::2’::<lambda_1>,void,FTickableObjectBase *>::Call() [A:\UE56_Source\Engine\Source\Runtime\Core\Public\Templates\Function.h:316]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffdb5d49eb5 UnrealEditor-Engine.dll!FTickableObjectBase::SimpleTickObjects() [A:\UE56_Source\Engine\Source\Runtime\Engine\Private\Tickable.cpp:112]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd5110c687 UnrealEditor-UnrealEd.dll!UEditorEngine::Tick() [A:\UE56_Source\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:1909]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffd51df6f06 UnrealEditor-UnrealEd.dll!UUnrealEdEngine::Tick() [A:\UE56_Source\Engine\Source\Editor\UnrealEd\Private\UnrealEdEngine.cpp:533]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ff679909ce4 UnrealEditor.exe!FEngineLoop::Tick() [A:\UE56_Source\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5625]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ff67992e5ac UnrealEditor.exe!GuardedMain() [A:\UE56_Source\Engine\Source\Runtime\Launch\Private\Launch.cpp:187]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ff67992e6ba UnrealEditor.exe!GuardedMainWrapper() [A:\UE56_Source\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:128]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ff67993209e UnrealEditor.exe!LaunchWindowsStartup() [A:\UE56_Source\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:282]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ff679944e44 UnrealEditor.exe!WinMain() [A:\UE56_Source\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:339]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ff6799480fa UnrealEditor.exe!__scrt_common_main_seh() [D:\a_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
[2025.11.04-17.16.56:340][263]LogWindows: Error: [Callstack] 0x00007ffe4f8de8d7 KERNEL32.DLL!UnknownFunction
[2025.11.04-17.16.56:340][263]LogWindows: Error:
[2025.11.04-17.16.56:345][263]LogExit: Executing StaticShutdownAfterError
[2025.11.04-17.16.56:415][263]LogWindows: FPlatformMisc::RequestExit(1, LaunchWindowsStartup.ExceptionHandler)
[2025.11.04-17.16.56:415][263]LogWindows: FPlatformMisc::RequestExitWithStatus(1, 3, LaunchWindowsStartup.ExceptionHandler)
[2025.11.04-17.16.56:415][263]LogCore: Engine exit requested (reason: Win RequestExit)

Hello @Origins ,
I created a new project from scratch to see if I could reproduce the error, but I didn’t encounter any issues.
Did you do anything specific in that project?
When you create a new one from scratch, do you get the same error?
I’ll leave the documentation here in case it’s useful and you want to take a look at it.

Let me know what you find!