FortiClient webserver certificate not secure

[FortiHelp]

Dears ,

How I can solve this issue?

[ozkanaltas]

Hello @FortiHelp ,

If you install a certificate compatible with fqdn or IP address this warning will disappear. 

https://docs.fortinet.com/document/forticlient/7.2.4/ems-administration-guide/917193/adding-an-ssl-c...

[FortiHelp]

Dear ozkanaltas ,

Many thanks for your kind response. On the EMS server, there are two certificates: one for the web server and the second for the endpoint certificate. I have built a local certificate using OpenSSL and used it for the endpoint control certificate. I have a problem with the webserver certificate.

This Photo to understand me better

Thank you

[ozkanaltas]

Hello @FortiHelp,

First certificate built-in certificate. Because of that, this can't be compatible with ems fqdn. 

You need to configure a new fqdn to FortiClient EMS on the Settings page. After that, you need to upload a certificate compatible with this fqdn. Or you can use lets encrypt for this operation. 

https://community.fortinet.com/t5/FortiClient/Troubleshooting-Tip-Troubleshooting-and-Resolving-the-...

https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-EMS-certificate-not-trusted-with-cus...

If you don't want to use fqdn instead of IP. You can ignore this warning.