Unreal Engine 4 crashes in project browser

Development Platform & Builds
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1

Hello,

I just installed unreal engine 4.10.2 and whenever I launch UE4 it sits in prject browser for a couple of seconds, and then it crashes and gives me an error report. In report i see paths leading to F: and D: drives which I don’t have. I’m running windows 10 and I installed all latest updates. I googled a bit on this error and only thing I could find is that I had to update windows which I have, but it is still crashing.

Is this a bug in UE4 which I can’t fix, or how can I overcome this error?

Thanks in advance
-vav17

Error report:

MachineId:52EF971C42371A5E94966DA5E9C708B9
EpicAccountId:57e9fe171b45487689127eaf55d8a8e8

Unknown exception - code 00000001 (first/second chance not available)

"Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 259] 
D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\Windows\D3D11RHI\Private\D

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\core\private\misc\outputdevice.cpp:374]
UE4Editor_D3D11RHI!VerifyComRefCount() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:252]
UE4Editor_D3D11RHI!FD3D11Viewport::Resize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:199]
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::ConditionalResizeViewport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:325]
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:633]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1200]
UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:927]
UE4Editor_Slate!FSlateApplication::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1441]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launchengineloop.cpp:2460]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.10\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll
2

Hi vav17,

This is a known rendering issue with UE4 that seems to involve Windows 10, which we have reported as UE-21504. Unfortunately we don’t know of a workaround at this time, but once we do we will update you. We’ll let you know if we need any additional information. Thanks for report.

3

Was there an updated? Because for some reason it works for me now. I restarted my computer a couple of times after I did update, that might have fixed it.

4

4.10.2 was released, though I don’t know if anything in that fixes this issue in particular. I know there are still reports coming in for 4.10.2, so I would guess not. Did you update to 4.10.2 between reporting this and it fixing itself? Would you mind providing your dxdiag so we can include that information with report? One last thing: do you have MSI Gaming App installed? Was it running?

5

I think we just found a fix!

When I close MSI gaming extention everything works perfectly fine, although when I have it running again, launcher and project browser both crash again.

This is not a bug with windows 10, but a bug with newer computers automaticly running MSI gaming app. Because this is installed by default with newer (like windows 10) computers/motherboards.

Fix: turn off MSI Gaming app

-vav17

6

I think we just found a fix!

When I close MSI gaming extention everything works perfectly fine, although when I have it running again, launcher and project browser both crash again.

This is not a bug with windows 10, but a bug with newer computers automaticly running MSI gaming app. Because this is installed by default with newer (like windows 10) computers/motherboards.

Fix: turn off MSI Gaming app

-vav17

7

Excellent, thank you for that confirmation. I’ll relay that to developers and see if there’s a fix they can implement or if we simply need to add that program to list of compatibility issues. Thanks!

8

No problem! I’m happy I found my solution, and I hope more people will look at this and fix it for themselfs too :slight_smile:
Thanks for all quick responces !

-vav17