FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.
This article describes about an error in FortiClient VPN showing 'Error: The authentication did not complete within the specified timeout. Please try again' when connecting VPN using SAML
Scope
FortiClient VPN connecting with SAML configuration
Solution
Most of the issue is caused by the interruption between SAML request and reply.
One of the common reason in between is that the FortiGate get the connection timeout while waiting the SAML request and reply done.
To resolve this issue customer should always making sure that the FortiGate have remote timeout configuration well-configured.
# config system global set remoteauthtimeout <1-300s> end
The default value is 5 seconds, it is recommended to increase this value.
