Starting with Windows 10 Preview Build 21332, which began rolling out this week, when you do a clean install of Windows 10 the Paint 3D and 3D Viewer applications won’t be included by default.

Now, how can you view a 3D model present in the .stp/ .step file on your Windows 10 PC? The native 3D apps like 3D Viewer or Paint 3D don’t let you open a STEP file.