I have recently installed FortiClient 5.4 in a virtual machine running Windows 7 in order to connect to an external VPN. I have configured the settings of the connection (VPN-SSL), and I receive the email with the FortiToken correctly. However, once I try to log in using the six digit code, I always get the same error message (I'm from Spain, so this is more or less what it says): "Unable to connect to the VPN, VPN server may not be available (-8)".
Also, in the logs I get the following message: "msg=SSLVPN tunnel connection failed (Error=-8)"
At first, I thought that the origin of the problem was the server, but they have used my credentials from another network to check them, and apparently it worked. I don't use any antivirus program in the host, and Windows Firewall is completely disabled. Any leads of what could I do to solve the issue?