I am working on a workflow having Create Appointment action.For this we installed "Nintex Workflow Exchange Connector Service" in application Server were mailbox was present.The Exchange.msi file was present in web front server which was copied to application sever.We have followed the steps mentioned in "NW2013 Install Guide Exchange 07-10-13.pdf " document for the installation of Exchange Service. Also I have ensured the root certificate is installed in servers. The workflow with create appointment action is running and is showing the completed status without any error. But the action is not reflected in outlook. Appointment is not created in outlook. What can be the reason behind this issue?