Troubleshooting Tip: FortiClient VPN with SSO configured gets stuck in 'Connecting...' on KUbuntu 22.04

[Umer221]

Description	This article describes how to troubleshoot an issue with FortiClient VPN on KUbuntu 22.04, particularly when using Single Sign On (SSO) authentication. The problem arises when the authentication window fails, leading to FortiClient getting stuck in the 'Connecting...' status.
Scope	FortiOS, FortiClient, KUbuntu 22.04.
Solution	This issue occurs if FortiClient gets stuck at the 'Connecting' status with SSO authentication enabled but skips 2FA verification:  Uninstall the current version of FortiClient and install either 7.2.1 or an earlier version by referring to the instructions in this article: Complete the following prerequisite by installing the gnome-shell: sudo apt update && sudo apt upgrade sudo apt install gnome-shell After completing the steps above, reboot the device and try connecting again.