D3D12EnableExperimentalFeatures causes D3D12CreateDevice to fail

I am following Nvidia’s DXR tutorial: D3D12HelloTriangle. I call below code before creating device and it returns true

UUID experimentalFeatures = { D3D12RaytracingPrototype };
HRESULT hr = D3D12EnableExperimentalFeatures(1, experimentalFeatures, NULL, NULL);

But this causes later for D3D12CreateDevice to fail. I am using Nvidia Geforce GTX 1050 :

Card name: NVIDIA GeForce GTX 1050
Chip type: GeForce GTX 1050
DAC type: Integrated RAMDAC
Device Type: Full Device
Device Key: Enum\PCI\VEN_10DE&DEV_1C8D&SUBSYS_12651025&REV_A1
Driver Version:
DDI Version: 12
Feature Levels: 12_1,12_0,11_1,11_0,10_1,10_0,9_3,9_2,9_1
Driver Model: WDDM 2.3

You need the 1809 build of windows and turing cards to make it work