FortiClient VPN crashes as soon as it connects (Linux)

[kubajmarek]

FortiClient version: 7.2.8.0926

Linux version: Ubuntu 22.04.5

I have two VPNs defined, 1 added manually and the other added by EMS.

The one added manually connected fine before adding EMS. After adding EMS, connecting to either VPN crashes FortiClient right after connecting. I tried to connect through CLI, but I am not sure if this is possible with SAML authorization.

I tried to look for something in the logs, and this is what I found right around the crash, in sslvpn.log:

20250402 01:33:11.112 TZ=+0200 [sslvpn:DEBG] route:614 Add the route for 91.226.249.10(192.168.0.1)
20250402 01:33:11.112 TZ=+0200 [sslvpn:DEBG] route:374 Set up split tunnel routes
20250402 01:33:11.112 TZ=+0200 [sslvpn:INFO] nettools:484 Received error: File exists [-17]. Stop reading socket
20250402 01:33:11.112 TZ=+0200 [sslvpn:INFO] nettools:375 Failed to receive netlink message
20250402 01:33:11.112 TZ=+0200 [sslvpn:EROR] route:417 Failed to add route. Route details: destination 185.166.143.37, mask 255.255.255.255, gateway 172.31.88.27, device_index 9, metric 0 (add))
20250402 01:33:11.112 TZ=+0200 [sslvpn:DEBG] vpn_connection:2780 Start IO loop
20250402 01:33:11.112 TZ=+0200 [sslvpn:INFO] main:1483 State: Connected
20250402 01:33:11.151 TZ=+0200 [sslvpn:EROR] vpn_connection:1164 IO write remote failed. SSL error: 5
20250402 01:33:11.151 TZ=+0200 [sslvpn:EROR] vpn_connection:1957 Error: Disconnected because of error: IO write remote failed.
20250402 01:33:11.155 TZ=+0200 [sslvpn:DEBG] nmtools:817 Reading Network Manager settings backup

main.log just looks like this

[2025-04-02 01:33:11.206] [info] WindowManager WindowManager - handleWindowClosed
[2025-04-02 01:33:11.207] [info] WindowManager WindowManager - all windows are destroyed. quit the app.

[fortilic]

@kubajmarek hello! what version of Fortigate (VPN server for your Forticlient) are you using?

[AEK]

Can you try FortiClient 7.0.14?