I have a Fortigate 60E running 6.2.15 that my remote MacBook Pro users connect to via FortiClient. I typically install the "FortiClientVPNSetup" version of the installer, because we don't use FortiClient for anything else – just VPN. When I installed the latest 7.2 release for a new user and did the config, the user was unable to connect – FortiClient would just show "Connecting" forever. Clicking the Disconnect button did nothing.
After a lot of troubleshooting, I uninstalled FortiClient and reinstalled using the full FortiClient installer instead of just VPN. Once that was installed and configured, it worked. Any ideas why the VPNSetup would fail to connect while the full FortiClient would work?
The newest version. 4.19.4 I believe? Yes, keep alive is on. I need to check their firewall. Im starting to think it's their router/modem, because the log for the client starts by saying this device is behind a NAT. I'm going to troubleshoot more tonight and I'll update once I have some more details.
The Forticlient VPN setup version should also get connected without issues but as you say it is stuck in the connecting phase, we will have to check the forticlient logs and the sslvpnd logs by reproducing the issue to understand the reason.
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