MachineId:DC56C92D4CF7C29DBDBAED897504669F
EpicAccountId:2784c9bfe3a846d4ac620c8013a54862

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

"Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.9\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 259]
D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.9\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\misc\outputdevice.cpp:354]
UE4Editor_D3D11RHI!VerifyComRefCount() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:259]
UE4Editor_D3D11RHI!FD3D11Viewport::Resize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:199]
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::ConditionalResizeViewport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:325]
UE4Editor_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows_Private() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:633]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1200]
UE4Editor_Slate!FSlateApplication::DrawWindows() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:927]
UE4Editor_Slate!FSlateApplication::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1441]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\launch\private\launchengineloop.cpp:2461]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]