I think changing compatibility mode for Unity exe fixes this.

I tried with another USB camera. Same problem.

Any ideas?

I tried with empty project, same issue.

Also tried to uninstall antivirus, no better.

Hi,

If it worked before, the issue could be related to a 3rd party software which had access to the vuforia/unity files, for ex. like an antivirus.

Does your scene contain other GameObjects besides the Vuforia AR Camera? and does it work without the AR Camera in the scene?

Thank you.

Vuforia Engine Support

1. Integrated camera for laptop (dell n7110)

2. It is listed as Integrated webcam.

3. Yes. It works in other apps.

4. It worked before. 

Hi,

I've tested with Unity 2019.1.9f1 and Vuforia 8.3.8, with external usb camera ( c920 logitech) and the integrated camera from my laptop and I was *not* able to reproduce the behavior. Also I've used the Vuforia Core samples as test project.

Could you please confirm the following to have a better understanding:

1. Are you using an external webcam or the integrated webcam of your laptop? For external usb camera please confirm the model.
2. If you go under VuforiaSettings-> Webcam is your camera being picked up?
3. Does your camera work outside of unity?
4. Did it work before?

Thank you.

Vuforia Engine Support