Is there a way to set up FortiClient to authenticate without client certificate?
The reason I ask this, is as out of 400 tickets I (IT Support) get a month 250 of them are client certificate expiration errors. If we could eliminate this it would be ideal. I don't know why my networks team have not caught wind of it if some solution exists, but I sure want to know. Please please give me an answer, I would very much take this forwards as a change request / possible implementation if there is one. Thanks in advance.
Although your question still requires some more clarification. I am assuming you are asking about SSLVPN authentication using Forticlient but without certificate based authentication. Below are some of the technical documents that you can try but it requires changes in your existing VPN deployment.
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