So, among the many issues with the SP4 (I seem to have nearly all of them but the boot loop), I can't activate the windows Hello login. I know where it should be in the sign in options, but it just isn't there. I can see Password, PIN (which I have assigned and am using to log-in), and Picture Password. I don't see any options for the Hello. When I search in Cortana for Hello it takes me to the same page in settings. Any body else having this problem or know how to solve it?