Pre-10.0 Engine API documentation for Unity

August 2, 2021 - 8:12am #1


Please find the Unity API documentation for the pre-10.0 Engine release (v9.8) here:


Vuforia Engine Support

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How do I make the animation start from the beginning when I move away from the image target and back

Unity Editor
May 26, 2022 - 9:06am #1


I am sort of new to Unity and Vuforia have been pretty good about figuring out my issues on my own, but this one has me stumped.

I am using Vuforia for my AR Camera and Image Target in Unity and how do I make the animation start from the beginning when I move away from the image target and back again?

When I move away from the image target and move back, the animation starts from where it was when I moved away from the image target.


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Failed to create ImageTargetObserver: DATABASE_LOAD_ERROR

Apple XCode
May 25, 2022 - 9:26pm #1

Xcode 13.2

MacOS Big Sur 11.6.5

IOS Device: Phone 6 (12.5.5)

Unity version: 2020.3.26f1

Vuforia Engine AR: 10.4.4


It's working ok when I directly build and run from Unity Editor

But currently we have the requirement for it to be plugged into IOS native app


I managed to launch the scene following this article


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Rotation, parent as camera, and forward vector with an AR camera

Unity Editor
May 13, 2022 - 7:35am #1

Hello to all,
I'm developing an phone app with the Vuforia package for AR in Unity.
I want to make a game objet follow a calculated rotation from touch input in addition to the camera rotation, so that it acts like a cursor to interact with the scene objects, following the camera.

I tried two setups using the midair placement components with the world origin set to the midair stage :

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Multiple BackCameras / external cam support

Unity Editor
May 7, 2022 - 3:58am #1

Can you switch between multiple rear cameras

Like a wide-angle camera added to the IPAD PRO 2021

Can I switch to this wide-angle camera

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Multiple instances of Vuforia on same machine

May 4, 2022 - 10:39pm #1

I have two HD Pro Webcam C920 connected to my Laptop, and I'm trying to run two Vuforia UWP apps at the same time, each using one of those cameras; this can be useful in some kind of Multiplayer game on the same machine.

I can run the apps one by one, and everything works fine; each takes the camera they should've taken and works as expected; But when I want to run them both, the second instance that runs always fails to start Vuforia.

Is there a workaround for this ?

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Unity Editor
April 25, 2022 - 8:43pm #1

Good day.

I created new project and add vuforia 10.6.3 on Unity 2021.3.1f1.

But even before any action it already points the following error:

Plugins: Failed to load 'C:/Users/jodoi/LowCostController/Library/PackageCache/com.ptc.vuforia.engine@f0b7b7833e83/Vuforia/Plugins/Windows/x64/FileDriver.dll' because one or more of its dependencies could not be loaded.

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Camera with Static Device Tracking can't show images

Unity Editor
March 2, 2022 - 4:14am #1


I use a static camera, so i try to set it on unity with vuforia.

I fellow the develop library here:, but get a black screen.

The camera connected to the laptop did not return any data, but the game object in the scene can be rendered. 

My unity version is 2020.3.25 and vuforia version is 10.5.5.


Here is the code i use:

Topic locked

"Get Premium" overlay although I've got a license

February 7, 2022 - 6:21am #1


I'm currently developing an update of my released app. I've got a license (Classic model) and use it to track Object Targets. In my latest build from today, there appears a watermark on the app (that wasn't there yesterday). Is it possible I've uploaded a file wrongly into the target database? Making it a model target instead of an object target?


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How to turn off camera and stop recognition in vuforia 10 ?

January 22, 2022 - 8:49am #1


I upgraded an old unity project from unity 2019.2.3/vuforia 8.3.8 to unity 2021.2.8/vuforia 10.3.2.

But the following syntax does not work.

ObjectTracker tracker = TrackerManager.Instance.GetTracker<ObjectTracker>();    



How should I write it in vuforia 10 ?

thank you~

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