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Fixed in 2017.2.X



Found in


Issue ID




[WSA] WorldAnchorStore.GetAsync throws an exception when starting deployed HoloLens app built

Windows Store Apps


Steps to reproduce:
1. Open the attached project (
2. Switch platform to Windows Store
3. Build for WSA Universal 10 SDK, Target device - HoloLens, Build type - D3D (C# Project and Development build checked)
4. Open Visual Studio solution
5. Deploy on emulator or HoloLens (Debug x86)
6. Observe the Output:
WinRTScriptingObjectWrapper::InternalAddRef Reference Count cannot be zero

Expected result: Unity should not throw an exception
Actual result: Unity throws exception

Reproduced with:5.6.0p1, 2017.1.0b1
Not reproduced with: 5.5.3p1

Fixed in: 2017.2.0a1
Backported to: 2017.1.0b9, 5.6.1p4

Comments (11)

  1. E716e696fc67eb6f0d9c48cc77a79fb9?d=mm


    Jun 23, 2017 18:50

    Fixed in 5.6.1p4

  2. 791d8458efe00527092a283b85114daf?d=mm


    Jun 07, 2017 06:34

    FYI we had a discussion about this here:
    currently a workaround is to move the GetAsync call from Awake to the Start method. Maybe this will help someone :)

  3. 2d2ad57a2a86d76f9cfdf242000f1558?d=mm


    Jun 04, 2017 14:35

    I am still waiting for this to be fixed. It's not enough to say it will be fixed in future versions: we depend on this tooling to get our projects done.
    Any idea on the timeline?

  4. E716e696fc67eb6f0d9c48cc77a79fb9?d=mm


    Jun 02, 2017 17:54

    Still happens in 5.6.1p2

  5. 72551da693fe59626301477ddf22b902?d=mm


    May 31, 2017 10:29

    Still an issue on 2017.1.0b7

  6. 35e30c06d2a7e9f320ab11b287bc6d70?d=mm


    May 30, 2017 22:39

    I am experiencing this in Unity 5.6.1f1, Holotoolkit-Unity 1.5.7, and Visual Studio 2017.

  7. Aba6e1147702f89f672dfcb2ebfdf206?d=mm


    May 30, 2017 07:09

    This is still an issue in 5.6.1f1

  8. 877da6b22f31d11c48618884d8d6e4d7?d=mm


    May 28, 2017 13:16

    When will this fix be released? The button above says that the issue has been resolved, but I can confirm it's still there with Beta 2017.1.0b7.

  9. A95095c7c751221421cff1e0bd689b73?d=mm


    May 26, 2017 11:52

    I confirm having this issue with Unity 2017.1.0b6 (64-bit) and Unity 5.6.1f1 (64-bit)

  10. 72551da693fe59626301477ddf22b902?d=mm


    May 23, 2017 07:04

    Having this issue on Unity 2017.1.0b5 and Visual Studio Community 2017 version 15.1

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