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New Contributor

FortiClient on W10 64bit ita (prod) 1903 - VPN server may be unreachable. (-14)

Hi all,

i've this issue FortiClient that connects to a remote SSL/VPN that give out this error: Uable to establish the VPN connection. The VPN server may be unreachable. (-14) I've tried allmost everything, i've uninstalled completely Kaspersky Endpoint, disabled W10 firewall etc... Still getting the error at about 80% status of the connection. the VPN remote vpn server is reachable i can ping it with a costant 29-32ms of icmp echo delay i can also telnet the port of the VPN server from the same PC Please help me ;) Thanks, best regards




New Contributor

ticket/thread closed


we now use the W10 FortiClient app from the Windows store

and we found also that the end user was inserting a wrong password  ;)







For next time; when it gets stuck at 80%, it's an authentication problem. Not reachability issue to the FGT.

Valued Contributor

if it is an authentication problem why the error message is something else?

Customers are calling us all the time that the VPN gateway is not reachable and the service we are providing has not the value they expected.

Fortinet should make something with this.




If you're using FortiClient 6.2, not FortiClient VPN, you can open a case and officially complain about the error message, not to just pass what the client side could see before giving up. They would explain you some reasons behind.

But if authentication is the problem, it's either a user problem supplying a wrong credential, which you can explain to the user like massimoecs' case, or something is wrong on the auth server side, which makes the user's complaint "useless" reasonable because they can't use it.

New Contributor



  Did you make any changes to System - Replacement Messages - SSL-VPN Login Page? I tried removing that whole page and I found that the Windows FortiClient needed %%SSL_LOGIN%% for the client to work. This is not ideal for my situation.



New Contributor

Hi! Have the similar problem.


VPN user from MS AD LDAP


FortiGate 200e in HA Active-Passive

As a result of my experiments came to the following-

When i added the local user on FG and connected VPN with it, client will were connected. Then i disconnected VPN, and next connected with AD user creds, and VPN established.

Bug or not i dont know, but after some time, the problem returns


I’ve seen this too if the password has expired.

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