[Solved in build 10074 and 10130] FortiClient SSL VPN not working: Error 720 "A connection to the remote computer could not be established"

I have installed W10 in dual boot with W8.1.

FortiClient SSL VPN is fine in W8.1 but it is not working on W10: connection get stuck at 98%.

From Windows Event log:

" The user SYSTEM dialed a connection named fortissl which has failed. The error code returned on failure is 720"

On W8.1 I use Forti_SslvpnClient_x64_4.0.2294.exe It is bundled with FortiGate, it cannot be downloaded from Fortinet web site, it is probably not the latest release.

Since it was not working I tried latest FortiClient online installer from http://forticlient.com
I installed only the SSL/IPSEC VPN part ( I did not installed the AntiVirus, Web Filtering, Firewall ... components).

I have same error 720.


This issue is simular to vpn and other dial apps can not pass though wan miniport ,error 720

[Edited] Problem is partially solved in build 9926 (using  SSL VPN Client 4.0.2294 on W10 x64).
I still have an issue with my company intranet, I created a new thread : FortiClient SSL VPN: DNS Server priority issue (cannot reach intranet sites with both public and private IP address)

[Edited 2015-04-10]

It was fine on 9926 and 10041 but it is broken again in 10049.

Windows Event log:

CoId={B9DAD255-FA93-4F59-B472-198D003D3D0E}: The user SYSTEM dialed a connection named fortissl which has failed. The error code returned on failure is 633.

See also Forticlient SSLVPN Stops at (98) with 10049 release

[Edited 2015-04-30]

It works again in build 10074 (tested SSL VPN Client 4.0.2294 on W10 x64).

Also OK in 10061 according to other people.

[Edited 2015-06-05]

Looks like it is broken again in build 10130 : stuck at 98%

It was OK in 10122 (before update to 10130).

[Edited 2015-06-07]

Clean install build 10130 (from ISO) : SSL VPN (4.0.2294) works again.

Answer
Answer

I had the same problem and found a way to get this installed. I posted steps on my blog: http://hereliesjason.com/installing-the-fortigate-ssl-vpn-client-on-windows-10-build-10074/

Jason

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Last updated April 7, 2021 Views 50,791 Applies to: