Hello to the SuperUser community,
I have recently installed Windows 10 Education on a Dell Precision laptop. It is on the latest, stable Fall Creators Update build (1709).
In recent days I have encountered an intermittent issue where when I boot the laptop and dismiss the lock screen to log on, the login screen does not appear. I see only my lock screen background fade (as it does on the login screen), but I do not see my user name and the password field. I wait about 30 seconds and then my PC returns to the lock screen. I keep dismissing it and seeing nothing for 30 seconds before the lock screen reappears.
On some other occasions I do get the login screen, but after logging it the page hangs on "Welcome" for about 30 seconds and then the lock screen reappears. When I dismiss it I have to log on again. Whether I see the login screen or not, I found that restarting the PC would solve the problem in most cases.
Furthermore, I have set up a PIN on my laptop through Windows Settings but do not see this option under Sign-up options, only for my Microsoft Account password and the recovery options I set on it.