Unable to login to server with any of the users - "could not open session" error appears if you try to "Su"

Solution In Progress - Updated -

Issue

  • Unable to login to server with any of the users - "could not open session". Even 'root' is also unable to login. Tried in console as well.

  • Unable to login - after entering the password of the user, login prompt appears again.

Environment

  • RHEL

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