Once the FortiClient was installed on my PC, I could not disable or uninstall it even though I have not used it for about two years. I am so glad that I eventually removed it from my computer by following the instruction on a website.
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1. Make sure to disconnect the FortiClient from the server and close the FortiClient.
2. Click the Start and type Command to find the Command Prompt app. Right-click on it and select run as administrator.
3. Execute the command below to ensure it returns what you want to remove.
wmic product where "name like 'Forti%%'"
4. Execute the command below to uninstall FortClient.
wmic product where "name like 'Forti%%'" call uninstall /nointeractive
It may take some time to finish and restart your computer without warning.