Thanks @Serg675. Nailed it!

I can confirm this works on 2019.2.6f1

Actually it works fine for me (Unity 2019.1.12f1, Vuforia 8.3.8, MRTK v2.0.0 RC2.1).

All I do just adding Vuforia Behavior and Default Initialization Error Handler scripts to Main Camera (created by MRTK "Add to scene and Configure..." menu) and configure Vuforia Engine. Rest is the same as before. Works as expected.

Hello @rootsolutions,

Are you trying to import the whole MRTK library into your project? The Vuforia Engine HoloLens sample (free on the Unity Asset Store) utilizes select functions from MRTK to solve UX issues. However, it does not include the entire library.

Thanks,

Vuforia Engine Support

Did you have any luck with this issue? 

I am experiencing similar issues with Unity 2018, MRTK & HoloLens 1. 

Thanks

I have created test project without MRTK. Just Unity 2019.1.10f1 and Vuforia 8.3.8. And I have the same issue. Vuforia doesn't recognize the target.

The log says following

AR: INFO: 2019-07-16 14:19:34: Vuforia selected rendering API DirectX 11

AR: INFO: 2019-07-16 14:19:34: Vuforia SDK version 8.3.8

AR: INFO: 2019-07-16 14:19:34: Vuforia SDK build 3499

AR: INFO: 2019-07-16 14:19:34: Matched precache profile for Microsoft Corporation, HoloLens, UWP 10.0, 810.1

AR: INFO: 2019-07-16 14:19:35: Vuforia Fusion: Detected and enabled use of Windows Holographic

AR: INFO: 2019-07-16 14:19:36: ObjectTracker: Successfully created dataset

Successfully created data set.

….

Exception thrown at 0x77332E12 (KernelBase.dll) in Vuforia Test.exe: WinRT originate error - 0xC00DABE0 : 'No capture devices are available.'.

cameraDeviceStartCamera

'Vuforia Test.exe' (Win32): Loaded 'C:\Windows\System32\RTMediaFrame.dll'.

AR: INFO: 2019-07-16 14:19:37: Starting camera with profile for HoloLens, 810.1

Exception thrown at 0x77332E12 in Vuforia Test.exe: Microsoft C++ exception: Il2CppExceptionWrapper at memory location 0x024FF080.

Look like Vuforia can't get access to the HoloLens camera for some reason. The test app asked for camera permission and I have granted it and have checked that it's granted. So looks like some incompatibility between Vuforia and Unity 2019.1 and MRTK has nothing to do with it.

Hello,

I have tried without success too. I use MRTK v2 RC2.1 and Vuforia 8.3.8 and Unity 2019.1.9f1. My app doesn't crash but doesn't recognize my MultiTarget either.

The same scene worked fine with HoloLens Toolkit 2017.4.3.0 and Unity 2018.4.3f1.

Any comments?

I'm afraid vuforia doensn't work with the hololens or mrtk since the holotoolkit was converted to mrtk. I've tried everything I could find, but so far nothing worked.

It would be really helpful to have some documentation on how to get started with the latest MRTK v2 and Vuforia. I've been trying for some time now to make this work, however, my application always crashes as soon as I want to run it on the HoloLens. I've set up Vuforia according to the documentation and attached a Vuforia Behavior Script to my MixedRealotyPlacespaceMainCamera from MRTK. Without the Vuforia script, the application runs fine on the HoloLens. I really hope for a quick reply from you guys. I think this is a critical point in time with the new HoloLens to be released soon, so if Vuforia wants to be the go-to framework for easy AR applications, some docs on how to get started with the latest MRTK should be a must-have. 

 I couldn't use it. It was all wtrong. It really could use?

Yes ，I get it . Thank you.

Hello,

My understanding is that MRTK is used in the Vuforia HoloLens samples, available for free on the Unity Asset Store.

Thanks,

Vuforia Engine Support