Fortinet Application
Use this guide when FortiClient VPN will not connect, keeps prompting for sign-in, drops the tunnel, or connects but you still cannot reach company resources.
Reviewed April 2026
Application Guide
FortiClient VPN is used to connect your computer to your company's private network when you are away from the office.
Most FortiClient issues come from the wrong VPN profile, a local internet problem, a multi-factor sign-in or browser sign-in step that did not finish, or a tunnel that connects but does not reach the resource you expect.
Plain English
Remote-access VPN app used to reach internal company resources, file shares, and private web tools when you are away from the office.
It is part of the Fortinet family covered in our app help.
Common problems
The VPN tunnel never finishes connecting, or FortiClient returns an immediate connection or sign-in error.
Confirm the computer has normal internet access, reopen the correct company VPN profile, and retry the same tunnel after restarting the computer once.
Send the tunnel name, the exact FortiClient message, and whether normal internet browsing works at the same time.
FortiClient opens a browser, multi-factor sign-in prompt, or sign-in page, but the VPN session never finishes connecting afterward.
Complete the sign-in or approval flow in the browser, return to FortiClient, and note whether the issue started after a phone or password change.
Send a screenshot of the sign-in or multi-factor sign-in page, the work account or username you used, and whether the same multi-factor sign-in method works elsewhere.
The tunnel shows as connected, but file shares, internal websites, or remote tools still do not work.
Test a second internal site or path so you can tell whether the whole VPN path is failing or only one app is affected.
Send the resource that fails, whether any other internal site or path works, and a screenshot showing the tunnel connected.
First things to try
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What support needs
Licensing & access
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