Christophe, did you manage to resolve this? I have exactly the same problem with 1709.
Any pointers appreciated. Thanks Kev
I manage to create a mandatory profile for Windows 10 1709. when I log on to a working with Windows 10 version 1709 installed and Windows AD domain joined. I get the following error message:"We can't sign into your account" "This problem can often be fixed by signing out of your account and then signing back in. If you don't sign out now, any files you create or changes you make will be lost.