Hi Sergey, I don’t seem to be getting that same error as you about the DirectX11, In my DxDiag it shows as my computer having DirectX 11 but my GPU is only DirectX 10. I can only assume the error your getting is referring to this:
“Using feature levels, you can develop an application for Direct3D 9, Microsoft Direct3D 10, or Direct3D 11, and then run it on 9, 10 or 11 hardware (with some exceptions of course, new 11 features will not run on an existing 9 card for example)” (Direct3D feature levels - Win32 apps | Microsoft Docs)