Holographic Remoting Crashing UE5 + Hololens 2

Scottimus06 · May 6, 2022, 12:59pm

I am attempting to use the holographic remoting feature with the Hololens2 using UE5.0.1.

This worked great in the past on UE4 however when I click “Connect” the editor crashes with the following report (yes I have sent the error in). Any idea on what might be causing the issue? My level is essentially a blank project with a cube in it - so nothing much added besides some simple gaze tracking turned on so far.

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000

Microsoft_Holographic_AppRemoting
Microsoft_Holographic_AppRemoting
Microsoft_Holographic_AppRemoting
MixedRealityInterop
UnrealEditor_WindowsMixedRealityHMD!WindowsMixedReality::FWindowsMixedRealityHMD::ConnectToRemoteHoloLens() [D:\build\++UE5\Sync\Engine\Plugins\Runtime\WindowsMixedReality\Source\WindowsMixedRealityHMD\Private\WindowsMixedRealityHMD.cpp:2539]
UnrealEditor_WindowsMixedRealityHMD!WindowsMixedReality::FWindowsMixedRealityStatics::ConnectToRemoteHoloLens() [D:\build\++UE5\Sync\Engine\Plugins\Runtime\WindowsMixedReality\Source\WindowsMixedRealityHMD\Private\WindowsMixedRealityStatics.cpp:186]
UnrealEditor_WindowsMixedRealityPlatformEditor!FWindowsMixedRealityDetails::OnConnectButtonClicked() [D:\build\++UE5\Sync\Engine\Plugins\Runtime\WindowsMixedReality\Source\WindowsMixedRealityPlatformEditor\Private\WindowsMixedRealityDetails.cpp:66]
UnrealEditor_WindowsMixedRealityPlatformEditor!TBaseRawMethodDelegateInstance<0,FWindowsMixedRealityDetails,FReply __cdecl(void),FDefaultDelegateUserPolicy>::Execute() [D:\build\++UE5\Sync\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:453]
UnrealEditor_Slate!SButton::ExecuteOnClick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp:464]
UnrealEditor_Slate!SButton::OnMouseButtonUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Input\SButton.cpp:389]
UnrealEditor_Slate!<lambda_51e270ca99ea7ce852539efd04dd453f>::operator()() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:4961]
UnrealEditor_Slate!FEventRouter::Route<FReply,FEventRouter::FToLeafmostPolicy,FPointerEvent,<lambda_51e270ca99ea7ce852539efd04dd453f> >() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:405]
UnrealEditor_Slate!FSlateApplication::RoutePointerUpEvent() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:4947]
UnrealEditor_Slate!FSlateApplication::ProcessMouseButtonUpEvent() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5495]
UnrealEditor_Slate!FSlateApplication::OnMouseUp() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Framework\Application\SlateApplication.cpp:5460]
UnrealEditor_ApplicationCore!FWindowsApplication::ProcessDeferredMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2210]
UnrealEditor_ApplicationCore!FWindowsApplication::DeferMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:2699]
UnrealEditor_ApplicationCore!FWindowsApplication::ProcessMessage() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:1078]
UnrealEditor_ApplicationCore!FWindowsApplication::AppWndProc() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsApplication.cpp:916]
user32
user32
UnrealEditor_ApplicationCore!FWindowsPlatformApplicationMisc::PumpMessages() [D:\build\++UE5\Sync\Engine\Source\Runtime\ApplicationCore\Private\Windows\WindowsPlatformApplicationMisc.cpp:138]
UnrealEditor!FEngineLoop::Tick() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:5139]
UnrealEditor!GuardedMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Launch.cpp:183]
UnrealEditor!GuardedMainWrapper() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:147]
UnrealEditor!LaunchWindowsStartup() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:283]
UnrealEditor!WinMain() [D:\build\++UE5\Sync\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:330]
UnrealEditor!__scrt_common_main_seh() [d:\a01\_work\6\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288]
kernel32
ntdll

JesseSPIE · June 13, 2022, 8:36am

Hi, I have the same problem with one of my projects. It is a copy of another project, and for that other project connecting does work. Maybe copying a project can cause this error? I am using UE4.27.

Did you found a solution?

Scottimus06 · June 13, 2022, 6:45pm

I started from a blank project so don’t think that is the issue. I have not found a solution (I guess I’ll just wait until it hopefully gets fixed in some future minor release). I only saw this issue with UE5, not with 4.27. Sorry I can’t be of much help.

Scottimus06 · January 5, 2024, 7:17pm

Not sure what is going on but I got things working just fine with UE5.1 using the 5.1 branches from MicrosoftOpenXR and UXTools. Whatever it was glad it got fixed.

system · February 4, 2024, 7:18pm

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