If you are receiving error “The server disallowed the connection” when launching the Junos Pulse client it means you have not allowed netconnect on the User Role you created for mobile devices. It’s easy to make the mistake of configuring a netconnect profile but not hitting the tick the box which binds it to the role. The form should really tick the bx when you select either Network Connect or Junos Pulse automatically..
Click on Users/User Roles. Select the User Role you created for the mobile devices and then go down and confirm the ‘Network Connect’ box is ticked.