# UE4 4.16 LogD3D11RHI:Error / Oculus related?

**URL:** <https://forums.unrealengine.com/t/ue4-4-16-logd3d11rhi-error-oculus-related/396298>\
**Category:** Platform & Builds\
**Tags:** unreal-engine, crash, Oculus-Rift, bug-report, UE4, question\
**Created:** [June 18, 2017, 8:13am UTC](https://forums.unrealengine.com/t/ue4-4-16-logd3d11rhi-error-oculus-related/396298 "2017-06-18T08:13:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![1shinyobject](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@1shinyobject](https://forums.unrealengine.com/u/1shinyobject)\
**Post date:** [June 18, 2017, 8:13am UTC](https://forums.unrealengine.com/t/ue4-4-16-logd3d11rhi-error-oculus-related/396298/1 "2017-06-18T08:13:50Z")

</div>

Unreal crashes nearly every time I end play in any mode but crashes 100% of the time in VR mode. Here are my specs including the log. Thank you in advance for your help.

LoginId:f6bc39434e64cfbb623cd99c3151b191  
EpicAccountId:6faf1d6e6b934936917d3555d8d728cf

OS: Windows 10  
CPU: i7-6700K  
GPU: GeForce GTX Titan X  
Nvidia Driver: 382.53  
Oculus: 1.15.0.392473

I suspect this might be Oculus related because I unplugged my Oculus and Unreal worked without issue. As soon as I plugged the Oculus back in, I crashed after exiting play. I also created a new VR project (with no content) in 4.15.3 and I still crashed after ending play in VR mode.

As far as I can tell this isn’t related to [UE-30488](https://issues.unrealengine.com/issue/UE-30488) as I believe that issue was resolved. I did come across this [bug report.](https://answers.unrealengine.com/questions/667905/vr-simple-project-crash.html) However, that user was running Oculus 1.16. I’m on 1.15, which seemed to work for him.

Note: I asked a [similar question](https://answers.unrealengine.com/questions/617892/constant-crashes-4153.html) recently but after updating some drivers and re-installing software I’m getting different errors so I’m starting a new thread.

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**Author:** ![anonymous\_user\_7febc6ed](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_7febc6ed](https://forums.unrealengine.com/u/anonymous_user_7febc6ed)\
**Post date:** [June 18, 2017, 11:29am UTC](https://forums.unrealengine.com/t/ue4-4-16-logd3d11rhi-error-oculus-related/396298/2 "2017-06-18T11:29:44Z")

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My editor has started crashing when exiting PIE mode in the last couple of days. Also running 4.16 using an Oculus - unplugging the Oculus seems to fix the problem.

```
[2017.06.18-10.53.09:483][106]LogWindows:Error: === Critical error: ===
[2017.06.18-10.53.09:483][106]LogWindows:Error: 
[2017.06.18-10.53.09:483][106]LogWindows:Error: Fatal error: [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\RenderCore\Private\RenderingThread.cpp] [Line: 798] 
[2017.06.18-10.53.09:483][106]LogWindows:Error: Rendering thread exception:
[2017.06.18-10.53.09:483][106]LogWindows:Error: Fatal error: [File:D:\Build\++UE4+Release-4.16+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 181] 
[2017.06.18-10.53.09:483][106]LogWindows:Error: Unreal Engine is exiting due to D3D device being lost. (Error: 0x887A0006 - 'HUNG')
[2017.06.18-10.53.09:483][106]LogWindows:Error: 
[2017.06.18-10.53.09:483][106]LogWindows:Error: 
[2017.06.18-10.53.09:483][106]LogWindows:Error: KERNELBASE.dll!0x0000000073093C58
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:120]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-Core.dll!FOutputDevice::Logf__VA() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:70]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-Core.dll!FDebug::AssertFailed() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-D3D11RHI.dll!TerminateOnDeviceRemoved() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:191]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-D3D11RHI.dll!VerifyD3D11Result() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:230]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-D3D11RHI.dll!FD3D11DynamicRHI::ReadSurfaceDataNoMSAARaw() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11rendertarget.cpp:608]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-D3D11RHI.dll!FD3D11DynamicRHI::RHIReadSurfaceData() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11rendertarget.cpp:956]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-RHI.dll!FRHICommandListImmediate::ReadSurfaceData() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\rhi\public\rhicommandlist.h:3129]
[2017.06.18-10.53.09:483][106]LogWindows:Error: UE4Editor-Engine.dll!`FViewport::GetRawHitProxyData'::`31'::EURCMacro_ReadSurfaceCommand::DoTask() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\engine\private\unrealclient.cpp:1345]
[2017.06.18-10.53.09:484][106]LogWindows:Error: UE4Editor-Engine.dll!TGraphTask<`FViewport::GetRawHitProxyData'::`31'::EURCMacro_ReadSurfaceCommand>::ExecuteTask() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\public\async\taskgraphinterfaces.h:883]
[2017.06.18-10.53.09:484][106]LogWindows:Error: UE4Editor-Core.dll!FNamedTaskThread::ProcessTasksNamedThread() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:954]
[2017.06.18-10.53.09:484][106]LogWindows:Error: UE4Editor-Core.dll!FNamedTaskThread::ProcessTasksUntilQuit() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\async\taskgraph.cpp:701]
[2017.06.18-10.53.09:484][106]LogWindows:Error: UE4Editor-RenderCore.dll!RenderingThreadMain() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\rendercore\private\renderingthread.cpp:327]
[2017.06.18-10.53.09:484][106]LogWindows:Error: UE4Editor-RenderCore.dll!FRenderingThread::Run() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\rendercore\private\renderingthread.cpp:461]
[2017.06.18-10.53.09:484][106]LogWindows:Error: UE4Editor-Core.dll!FRunnableThreadWin::Run() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:76]
[2017.06.18-10.53.09:484][106]LogWindows:Error: UE4Editor-Core.dll!FRunnableThreadWin::GuardedRun() [d:\build\++ue4+release-4.16+compile\sync\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:33]
[2017.06.18-10.53.09:484][106]LogWindows:Error: KERNEL32.DLL!0x00000000763B8364
[2017.06.18-10.53.09:484][106]LogWindows:Error: ntdll.dll!0x00000000766770D1
[2017.06.18-10.53.09:484][106]LogWindows:Error: ntdll.dll!0x00000000766770D1
[2017.06.18-10.53.09:484][106]LogWindows:Error: 
[2017.06.18-10.53.09:484][106]LogWindows:Error: 
[2017.06.18-10.53.09:484][106]LogWindows:Error: 
[2017.06.18-10.53.09:484][106]LogWindows:Error: 
[2017.06.18-10.53.09:500][106]LogExit: Executing StaticShutdownAfterError
[2017.06.18-10.53.09:554][106]LogWindows: FPlatformMisc::RequestExit(1)
[2017.06.18-10.53.09:554][106]Log file closed, 06/18/17 20:53:09

```

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<div class="post-metadata">

**Author:** ![1shinyobject](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@1shinyobject](https://forums.unrealengine.com/u/1shinyobject)\
**Post date:** [June 19, 2017, 2:55pm UTC](https://forums.unrealengine.com/t/ue4-4-16-logd3d11rhi-error-oculus-related/396298/3 "2017-06-19T14:55:10Z")

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What version of Oculus are you running?