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FortiClient VPN Not working on Windows 11

Forum|Forum|2 years ago
September 12, 2023
5 replies
148534 views

I have just installed Windows 11 on my desktop PC and installed FortiClient v7.0.9.

I have steup my FortiClient app the same way as it was on Windows 10 but it is not working. I just get a failed to connect check your internet and VPN pre-shared key message.

It works fine on my Windows 11 Laptop though?

Anyone else had this and can offer any advise?

FortiClient

Best answer by mle2802

Hi there,

There is some cases where Window 11 cannot work with FortiClient accordingly. Can you please try with wifi or download this window driver 10.59.20 if you are using Realtek adapter https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-usb-3-0-software

Regards,

sw2090

SuperUser

There is a known issue with FortiClient and Windows 11 and some Realtek NICs that results in FortiClient being unable to connect the VPN. Maybe you ran into this?

DanST93Author

Explorer

Hi

Quite possibly!

Is there any fixes or workarounds for this?

hbac

Staff

Hi @DanST93,

Have you tried both SSL and IPsec VPN? You can try downgrading your NIC driver or try different FortiClient versions. If it doesn't work, please share FortiClient log: https://community.fortinet.com/t5/FortiClient/Technical-Tip-How-to-enable-debug-log-in-FortiClient/ta-p/190433

Regards,

mle2802Answer

Staff

Hi there,

There is some cases where Window 11 cannot work with FortiClient accordingly. Can you please try with wifi or download this window driver 10.59.20 if you are using Realtek adapter https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-usb-3-0-software

Regards,

DanST93Author

Explorer

Thanks - I will try the above when I get home.

mle2802

Staff

My pleasure, let me know if this work for you.

Regards,

madis

New Member

The same problem exists with Lenovo T14/P14 laptops, when USB-C NIC is used. No problems with WiFi/ethernet port. The NIC is Intel I219-LM.

anang_harianto

New Member

i have the same problem with lenovo IdeaPad Duet 5 12IAU7, Intel(R) Wi-Fi 6E AX211 160MHz. until now, my problem did'nt solved, maybe somebody can help me. thank you. Ping ke IP Local LAN tapi RTO.png VPN Connect Tapi tidak bisa masuk LAN.png

anang_harianto

New Member

Hi Guys...
I have solved my problem with flush dns form my command prompt, then i restart my laptop, connected forticlient, then i successfully connected to my local network. I hope this usefull for another friend with the same problem. thank you.

JSauter

New Member

Hi, same problem with a Microsoft Surface Pro 7 with default Windows 11 drivers.

The integrated network adapter is Intel Wi-Fi 6 AX201.

I downloaded the latest drivers from Intel support and it worked fine!

Peter_RI

New Member

Was having an issue with new install of Windows 11 Pro 24H2. Latest 7.4 VPN Client. My symptoms were that when clicking connect the program would hang and not connect at all. The progress count would not start. For anyone having these specific symptoms, I was missing the latest C++ redistributable package. Latest supported Visual C++ Redistributable downloads | Microsoft Learn I uninstalled the client, installed C++ and reinstalled the client and everything was fine. This was of course after following the above answers in this thread about updating drivers, but this was my issue. The VPN client installer does not list C++ as a prerequisite. Creds due to ronca-cp on reddit who suggested this solution.

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