My experience matches with what Zanyterp stated. The PCS appliance will always push down the Net Connect client that corresponds to the version of the PCS appliance OS. Are you sure it wasn't the auto update of the Pulse desktop client that you disabled in your demo? That can be contolled under Maintenance > System > Options. To resolve your issue, I'd suggest a full manual uninstall of all Juniper / Pulse components on the affected computers. You can reference the client side changes guide for your version of NetConnect for this. Then reboot and try another login. Also be aware that if you are using any elevation management tools like AppSense or PowerBroker you may need to adjust your rules for the VPN software components. I believe the digital signatures on the clients changed from Juniper Networks Inc. to something with the name Pulse Secure in it.
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