You may have been aware that a recent update from SAS IT on Managed Macs interfered with authorization of JMP 18 for employees.
I'm happy to report that late yesterday SAS IT pushed another update that resolves the problem.
You can confirm that you have received the most recent SAS IT update by looking at System Settings->Profiles and check the install date of Extensible Single Sign On Profile. If it is after 22Mar, 7:30 PM (ET?) then you have the most recent.
If you have been unable to authorize JMP 18 on your SAS-managed Mac please try again soon.
Note that this problem did NOT affect customer authorizations.
