I have tried everything I can think of to get Windows Hello working on a brand new Dell laptop. It was working great before I joined it to the domain and upgraded it to Anniversary.
I have tried every Group Policy combo I can think to try.
That page says you only need to enable Turn on convenience PIN sign-in and I have done that. I see the registry key get added, but PIN and Hello are still greyed out.
I ran across the following TechNet forum that discussed it. No official blog about it that I’ve come across, and since I got it working on the 2 devices I use by adding the registry key, I haven’t bothered to dig deeper to see if there is some other combination of settings that resolve it. I haven’t set up any GPO policies related to Hello.