Saving opened sessions in the Event Viewer

To generate session opening logs (corresponding to ID 4624 in the Event Viewer) that SN SSO Agent relies on to detect a new authentication, check that the audit logon policy has been enabled.

In Windows Server 2012 : Server Manager > Tools > Local Security Policy > Advanced Audit Policy Configuration > System Audit Policies – Local Group Policy Object > Logon/Logoff > Audit Logon.

All three checkboxes in the Policy tab must be selected.