Issues connecting to L2TP/IPsec after connect use FortiClient with another VPN

[damianhlozano]

Hello team!!!

I have the following issue:

We have many Fortigates in many different places, some Fortigates have a L2TP/IPsec VPN, which I can connect ussing the Windows native client, and anothers Fortigates have an IPsec VPN, which I can connect through FortiClient VPN.

I have FortiClient VPN 7.4.3 in my Windows.

When I restart my computer, I can connect to any VPN, but after connect and disconnect to any IPsec VPN with FortiClient, I cannot connect to any L2TP/IPsec VPN, until I restart the computer again.

The same with 7.4.1

A co-worker installed also 7.4.3 in his computer (Different computer and user, of course) and get the same issue.

I cannot use 7.4.4 because we still have many IKEv1 IPsec VPNs

Is there a way to workaround or solve this issue instead of restarting the computer?

As this is happening in more than one computer, I think this is a bug in FC 7.4.1-7.4.3

Thanks in advance.

Regards,

Damián

[funkylicious · Accepted solution]

hi,

if i recall correctly, it might be related to windows process(es) that needs to be restarted but can't remeber the name of it/them.

L.E. try the one described here, https://community.fortinet.com/t5/FortiClient/Troubleshooting-Tip-FortiClient-IPSEC-VPN-connection-i... 

[damianhlozano]

Hello!!!

Thank you Funkylicious!!!

This article ask to disable the service "IKEEXT" which is "Módulos de creación de claves IPsec para IKE y AuthIP" in my spanish Windows.

But I needed this service to be started to the L2TP VPNs to work.

If IKEEXT and PolicyAgent services are not disabled, I just needed to restart the IKEEXT service to make it work the L2TP/IPsec VPNs again.

Regards,

Damián