System: Zoom , canon 6d, windows 10 pro, oes utility

I start Zoom ans start a meating: Zomm unable to detect camera...

I Install Eos webcam utiliy, reboot

Failed to start the video camera. Please select another video camera in setting

In team, I don;t see the camera.

I see camera in device menu of windows.

Where can I download Beta or older version of Eos webcam utiliy, was working fine on winows home couple month ago.