How to remove `username list` from the gdm login screen in RHEL?

Solution Verified - Updated -

Issue

  • How to disable the user list on the Gnome ( GDM) login screen, so that the user account must be entered prior to authenticating with a password ?
  • Gnome ( GDM ) shows all users on login screen. Is there any way to disable it ?
  • How to disable the GNOME login screen user list ?

Example: (Any previous users that have logged into the system or are on the system are displayed)

Gnome Login Screen - User Login List Enabled

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • gdm

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