Just updated my S8+ to oreo and face unlock won't even initiate, I tryed to re-register my face again, but when I try to unlock nothing happens, I don;t even see the small icon that used to indicate that the camera is scanning my face, IRIS and finge...
My mistake, it was a security policy thing because of my work email. It worked fine once I removed my account. The strange thing is that the policy hadn't been charged or updated and it worked fine on Nought.