Crashing on windows 7 when trying to create a geometry collection or opening the chaos destruction demo.

Breaking on D3D11Util.cpp: Line 249 UE_LOG(LogD3D11RHI, Fatal,TEXT("%s failed \n at %s:%u \n with error %s"),ANSI_TO_TCHAR(Code),ANSI_TO_TCHAR(Filename),Line,*ErrorString);


Does not occur on Windows 8 or 10.

Steps to Reproduce

Using chaos on Windows 7:

Creating a geometry collection. Crashes on generation.


Open the Chaos Destruction Demo project. Crashes on load.


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Affects Versions4.23
Target Fix4.26
CreatedOct 24, 2019
UpdatedMar 3, 2020