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Note that disabling a sign on in an environment is not the same as disabling user authority (see Use Framework Users and Authority).
When a sign on is disabled but user authority is enabled, then the user profile is obtained from the operating environment and/or any authority related imbedded interface points (IIPs) that you have supplied.
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Note that you can use these options even if the Use Framework Users and Authority option is not selected.
This property is in the Framework User Administration Settings tab.