You can find the configuration tools on support.fortinet.com within the download folder for each new release of FortiClient, along with the installers for various OS and architecture variants.
Thank you Christopher, Can you tell me the name of file because at https://support.fortinet.com/Download/FirmwareImages.aspx in / FortiGate/ v5.00/ 5.2/ 5.2.1/ i don' t know which file is it. Thank you
Ah... Okay. There should be a drop-down menu where you can select files based on the product. It defaults to FortiGate, but there are also directories for FortiAnalyzer, FortiManager, etc., and in your case, FortiClient. Check under FortiClient, based on you desired software version.