Technical Note: FortiClient SSL VPN connection status gets stuck at 40%
Description
Solution
This article provides a possible solution for the SSL VPN connection attempt stopping at a status of 40% with the warning message "Unable to establish the VPN connection. The VPN server may be unreachable. (-5)".
Solution
Check in the internet explorer settings under Internet Options > Advanced > that TLS 1.0, TLS 1.1
and TLS 1.2 have been set to enable.
If they are not enabled, enable them and verify the connection.
and TLS 1.2 have been set to enable.
If they are not enabled, enable them and verify the connection.
