Forticlient VPN Windows 11 - connection established but no data being received

[IT-WSF]

The VPN client is newly downloaded from "https://links.fortinet.com/forticlient/win/vpnagent". The VPN client settings are the same as on Windows 10. The VPN is established, but the client is not receiving any data.

FortiClient VPN 7.0.7.0345

[Joel-H · Accepted solution]

Le problème vient de la KB2693643.

Une fois désinstallé sur Windows11, le client fonctionne.

A voir comment résoudre définitivement ce problème même avec l'installation de la KB.

[distillednetwork]

It maybe related to a driver, check out this article:

https://community.fortinet.com/t5/Support-Forum/Can-t-connect-to-IPsec-VPN-in-Windows-11/m-p/204904
there is an issue with the windows 11 version of the driver. 

[IT-WSF]

Dear distillednetwork, I dont have problem that VPN is not extablished. I have same problem as I found here:

https://community.fortinet.com/t5/Support-Forum/FortiClient-VPN-bytes-received-0/td-p/231991

or here:

https://community.fortinet.com/t5/Support-Forum/Forticlient-IPSec-VPN-Tunnel-established-however-0KB...

But reinstal Fortcleit doest help (I use latest version), Windows updates also doesnt help.

The VPN is established, but no byte recieved

[IT-WSF]

I also tested connection with another networkcards and issue is still same. The VPN is established, but no byte recieved

[btan]

Hello there,

Do you mean with the same VPN login credential, let's say usernameA and passwordA, working fine in Windows 10 machine?
1. Have a Windows 10 machine ready

2. Login to the same VPN gateway with usernameA and passwordA

3. VPN connects and all working fine in Windows 10?

If yes, kindly let us know your Windows version build number.
Start > system information > OS version

[IT-WSF]

All windows 10 laptops works fine with same users.

Problem is only with Windows 11.

Windows 11 are connected VPN is established, but 0 byte is recived.

Tested with diferent networkcards (wired, wireless) and drivers.

Users and setings are same as with Windows 10.

"FortiClient VPN 7.0.7.0345" and "Windows 11 Pro 22H2 22621.1265"

[btan · Accepted solution]

Joel-H's comment below is correct.

https://community.fortinet.com/t5/Support-Forum/Windows-11-22H2-update-FortiClient-VPN-doesn-t-work/...

Try uninstalling KB2693643.

https://techcommunity.microsoft.com/t5/windows-11/how-to-install-or-uninstall-rsat-in-windows-11/m-p...

https://www.windowslatest.com/2021/04/23/how-to-uninstall-windows-10-updates-manually/

[Joel-H · Accepted solution]

Le problème vient de la KB2693643.

Une fois désinstallé sur Windows11, le client fonctionne.

A voir comment résoudre définitivement ce problème même avec l'installation de la KB.