The details: Unity 2019.2.9 MixedRealityToolkit 2.1.0 Yes, Virtual Reality Supported is checked in PlayerSettings Yes, Windows Mixed Reality SDK is added (MRTK ensures correct settings at startup) Unity build process runs fine (generates UWP solution) I can open the generated solution in VS2017 or VS2019 and build and deploy The game appears successfully installed as it shows up in my Start Menu However when launching the game that I just built and installed, it only behaves as a 2D app, there's no VR/immersion at all. Launching it directly does not force the MR Portal to open. If I put on the headset first and browse to the app within that virtual room space, the app appears as a floating 2D view. Documentation has stagnated greatly for WMR Immersive Displays (if it was ever truly there in the first place) with the impending release of the HoloLens 2 and I sort of get that, but I can't find ANYTHING online that explains what I'm missing. Any help?