Hi there!
Just to confirm if you are also using an infrared camera or an external infrared camera when setting up facial recognition on your device? Because signing in with your face requires a Hello-compatible camera following the Microsoft support page:
https://support.microsoft.com/en-us/windows/security/configure-windows-hello
In the meantime, you can also try to update the camera and biometric drivers following:
- In Device Manager, expand Cameras and Biometric devices.
- Right-click each device and select Update driver.
Please don't hesitate to post back in the community and we fellow members will try our best to help. If there are any error messages, feel free to share a screenshot as well.