If your FortiOS version is compatible, upgrade to use one of these versions. A new SSL VPN driver was added to FortiClient 5.6.0 and later to resolve SSL VPN connection issues.To troubleshoot SSL VPN hanging or disconnecting at 98%: When you get a connection error, select Export logs.Set the Log Level to Debug and select Clearlogs.In the Logging section, enable Export logs.Export and check FortiClient debug logs.The default ip-pools SSLVPN_TUNNEL_ADDR1 has 10 IP addresses. Check that SSL VPN ip-pools has free IPs to sign out.FortiClient uses IE security setting, In IE Internet Option > Advanced > Security, check that Use TLS 1.1 and Use TLS 1.2 are enabled. Check the Release Notes to ensure that the FortiClient version is compatible with your version of FortiOS.To troubleshoot FortiGate connection issues: Check the browser has TLS 1.1, TLS 1.2, and TLS 1.3.Ensure FortiGate is reachable from the computer. Check that you are using the correct port number in the URL.Check the URL you are attempting to connect to.Check that the policy for SSL VPN traffic is configured correctly.Go to Policy > IPv4 Policy or Policy > IPv6 policy.Check the Restrict Access settings to ensure the host you are connecting from is allowed.To troubleshoot getting no response from the SSL VPN URL:
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