• Matt Sherif

UltraNote: FortiClient SSL VPN Failure Stages

UltraNotes are just quick tech notes for reference. This UltraNote covers the FortiClient SSL VPN failure stages and what they mean. Big thanks to my colleague Kostas S. for sharing this.


If FortiClient fails as the following stages, the likely cause is as follows:


  • 10% – Local Network/PC issue

  • 40% – Application or the Fortigate causing the error, occasionally caused by the local machines/network setup

  • 45% – MultiFactor Authentication

  • 80% – Username/Password issue

  • 98% – corruption of services/often resolved by reinstalling the client on the laptop.


This concludes this UltraNote, thank you for reading, I hope this was helpful.

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