EMS certificate not trusted

Hi @electrovalent1,

Please check this article: https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-EMS-certificate-not-trusted-with-customized/ta-p/240087

Regards,

Hi @electrovalent1 ,
Usually you should upload on the Fortigate the Root_CA that signed the EMS certificate and the Intermediate_CA if signed by a intermediatte CA . You need to have the full chain of certificates. 
Here is a very good article to understand more about the certificates:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-TLS-and-the-use-of-Digital-Certificates/ta-p/214958

Here is  how to troubleshoot your issue : 
https://docs.fortinet.com/document/fortigate/7.4.1/administration-guide/185333/configuring-forticlient-ems

You can share here if you see any error so we can analyze further. 

Regards!

Ok, thanks.