Hello,
I have the same problem with Avast Version 22.7.6025 (Build 22.7.7403.736). If Smart protection is active, I can not use the Windows Hello functionality. It always tells me, that the camera is currently used by another app, pls close this app first.
As soon as I deactivate the Avast Webcam protection, it works fine!
How did you go back to Version 22.6 ?
Thanks
Marc