I have been using a PS3 Eye camera on my Windows 10 PC for head tracking (TrackHat Opentrack) for a long time. Recently, "camera not found" has been displayed in almost all programs that have to access a camera.
I uninstalled, deactivated / reactivated the device, connected a second camera of the same model, updated the driver… EVERYTHING.
I noticed that the camera - I think - is only recognized as an audio device, but I don't see how to change that either.
The camera works on my laptop too.
I recently installed MS Teams, could it be somehow related?
With the standard Windows drivers, I honestly didn't even get the PS3 Cam to work. Always had to install the CL Eye platform driver before the cam ran under Windows.
Should also work for you: https://archive.org/details/CLEyeDriver5.3.0.0341Emuline