FortiClient
FortiClient proactively defends against advanced attacks. Its tight integration with the Security Fabric enables policy-based automation to contain threats and control outbreaks. FortiClient is compatible with Fabric-Ready partners to further strengthen enterprises’ security posture.
akushwaha
Staff
Staff
Article Id 408115
Description This article describes a solution for the error 'An invitation code required' received when trying to connect FortiClient to FortiClientEMS by using IP Address.
Scope FortiClient, FortiEMS.
Solution

The following error message may appear when connecting to FortiClient:

Screenshot 2025-08-25 164346.png
Getting this error because when invitation-only registration is enforced on FortiEMS, future FortiClients will not be able to register without an invitation code.

 

Solution:

Use the invitation code to connect to FortiEMS or change the EMS setting to connect without an Invitation Code as below:


Log in to the EMS server under System Settings -> EMS Settings -> Enforce invitation-only registration for and change it to None:

 

Screenshot 2025-08-25 170014.png