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@davidkline-ms davidkline-ms released this Oct 9, 2018

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Upgrade Guide


  • This release is targeted for the Unity 2017.x products
    • The recommended Editor version is 2017.4 LTS (Long Term Support)
    • This release should be compatible for development for both HoloLens & immersive headsets for 2017.2+
    • Windows SDK 10.0.17134 is required for 2017.2+
    • Visual Studio 2017 is required.
    • Fall Creators Update or later is required.
  • When upgrading to this release, delete all toolkit folders before importing the package.

What's New

  • (#2638) Updated drop of UnityGLTF with the correct coordinate space
  • (#2872) QR Code Tracking (preview)

Preview Features

  • (#1867) Spectator View (share holograms with HoloLens and iOS devices)
    • (#2327) Spectator View multilens support
  • (#2872) QR Code Tracking

Import HoloToolkit-Unity-Preview-2017.4.2.0.unitypackage to include SpectatorView or QR Code Tracking in your project.


  • (#2438) Spectator View Stuck
  • (#2487) Resolved rotation issue in TwoHandManipulatable script
  • (#2523) The indicator line of the motion controllers does not coincide with the starting point of the ray
  • (#2526) ObjectCollection doesn't behave as expected with non-zero rotation
  • (#2666) Fix HTK pointer debug rays
  • (#2669) Pointing ray doesn't properly disable itself when switching to an unsupported controller model
  • (#2670) Fix pointer line visibility when switching the active controller
  • (#2898) Add rotated transform to Solvers after glTF coordinate system update

Known issues

The following items are known and currently being investigated.

  • (#2123) Cannot build for IL2CPP in 5.6
  • (#2126) Invalid IL warnings in UnityEngine.Internal
  • (#2163) WACK failure - SpectatorView
  • (#2528) Strip Mesh, Instanced Mesh, and Particle System Line Renderers do not properly apply colors
Assets 5