Hello,
I added Azure AD as OpenID realm provider.
IT works wonderful.
Just one question, is it possible to add the user to default group after first login and user auto creation.
there is already a bug report/ticket for this on our bugtracker: https://bugzilla.proxmox.com/show_bug.cgi?id=5550
You can chime in if you want and/or subscribe to it, this way you'd get updates per e-mail when something happens.