Forticlient Not Working On Windows 10

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Active4 months ago

FortiClient SSL VPN not working on Windows 10 I am having some issue in using VPN in Windows 10. The connection is not stable here. I tried reconnecting the same but it keeps on falling. I had tried a number of times to make it work but still it is not responding.

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  2. Using FortiClient SSL VPN inside Internet Explorer (with Compatibility Setting enabled), running on Windows 10. After updating to Fall Creators version 1709 the vpn has stopped working. After entering username and 8-digit RSA token from my mobile phone, FortiClient gives the usual Tunnel Mode status screen, and then hangs with the status.
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I installed latest forticlient SSL VPN (5.4) and when I dial the VPN it connects successfully, but after about a minute the VPN disconnects.

The event viewer in 'Application' under the source 'RasClient' it says:

CoId={31DF16A3-7AC3-45CF-A5C5-07DF259A42EB}: The user SYSTEM dialed a connection named fortissl which has terminated. The reason code returned on termination is 829.

Any ideas anyone? I am working on this for 2 days without any luck...


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3 Answers

I have been suffering from this issue for about 6 months. I made great progress today -

  1. I realized the VPN connection works reliably with a wired ethernet connection; the issue is only with wireless.
  2. I did an 'ipconfig /flushdns' from an admin command prompt, without rebooting, and that seemed to fix the problem when connected wirelessly.

I've tried multiple Forticlient versions, two different laptops, various wireless networks, etc - the problem is very consistent for the past 6 months (was solid before that, suggesting perhaps some Windows Update issue).


Check your network devices for possible misconfigurations (ex. DHCP) some modem/routers needs ALG Settings to be enabled for Virtual Private Network(VPN) to work (ex. PPTP Pass-through..)

If you have other types of network disconnections you may also have to check your network/phone cables for possible failure.

As expained in website:


Message: The modem (or other connecting device) was disconnected due to link failure.

Forticlient Not Working On Windows 10

This error appears when the modem (in the case of dial-up or broadband connections) or tunnel (in the case of VPN connections) is disconnected due to a network failure or a failure in the physical link to the modem. The following are possible reasons for the failure.

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Are you connected to a FortiClient Enterprise Management system server? If you click on the compliance tab in the FortClient do you see 'This computer is connected to EMS:?


Not the answer you're looking for? Browse other questions tagged windows-10vpnssl-vpn or ask your own question.

Active2 years, 7 months ago

I am trying to connect to a remote server through FortiClient for an SSL VPN connection. When I connect through the FortiClient (version on my windows 7 32-bit system, it shows connected. But when I try to ping the server, I am not able to connect it. I have googled and found the following links which I found most appealing and followed it but all in vain.

I have another observation that when I connect, I can see that the 'Bytes received' field increases to some extent and then stops, but 'Bytes Sent' increases to much greater extent as can be seen in the image below.

Please help me solve this issue.

Update:I also want to add that I was able to connect it from my home successfully with the same version of FortiClient and OS but not from my work place. At my workplace I can also see that for FortiClient there's no internet connectivity.

Forticlient not working on windows 10


How can I find out what might be the problem and solve it?

MK SinghMK Singh

3 Answers

Try to run the CacheCleanAP.exe app that locates in the same folder that FortiSSLVPNclient.exe is. By default, it is in the c:Program Files (x86)FortinetSslvpnClient folder.
Although in a few moments after starting CacheCleanAP.exe, the Windows app crash error appears, it helped me to resolve the issue that FortiClient connects to the VPN but the connection didn't work.

I've been forced to use FortiClient for connecting to a partner's VPN in my workplace for about 3 years and I can say it is a bit buggy app especially if your Internet connection isn't perfect.
Sometimes FortiClient works great, but sometimes it can't connect without any observable reason or connects but the connection doesn't work.
The main disadvantage of FortiSSLVPNclient is that it changes routing table, so packets to many destinations that isn't supposed to go through VPN, go exactly through it.
Initially I worked with the 4 version of FortiClient installed, after that I tried version5 but this didn't help to resolve any problems. Moreover I was forced to install a bunch of unneeded apps (antivirus, etc.) that comes in the version 5. So as a result, I removed version 5 and returned to version 4.

A few days ago I couldn't connect to the VPN 1 or 2 days in a row. But yesterday I found a solution that did the trick. Running CacheCleanAP.exe immediately resolved the issue and I'm able to work again :)

Hope this helps.

Alexander AbakumovAlexander Abakumov

Forticlient Vpn Not Connecting Windows 10

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I know this is late, but I experienced a similar problem and here is the solution that worked for my case.

On Command Prompt (As Administrator);

netsh int ip reset resetlog.txt

netsh winsock reset

Reboot your OS

Hope this helps,

Mike MatMike Mat

you are already setting policy that vpn connection can be connected to the internet?

I have experienced similar things and I justify it by adding a policy that client vpn connection can be connected to the internet.

i make policy that from vpn network, to WAN interface and enable the NAT so the vpn network can access the internet.

hope this helps.

Abdullah LightAbdullah Light

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