When you attempting run your UWP DirectX 12 app via Visual Studio, it throws the following error:
Microsoft C++ exception: Platform::COMException ^ at memory location <location>. HRESULT:0x887A0004 The specified device interface or feature level is not supported on this system.
WinRT information: The specified device interface or feature level is not supported on this system.
The output tab reads: “D3D12GetDebugInterface: This method requires the D3D12 SDK Layers for Windows 10, but they are not present on the system.”