FortiClient VPN bytes received 0

[francescobalatti]

Hi, I'm using FortiClient VPN for conneticting to a customer's VPN but I can't receive any bytes:

Same username and password on other PC work and every username and password on my PC don't work.

I tried disabling/closing: firewall, antivirus, teams, onedrive, ...

I have the default settings of Windows 11 and I'm using FortiClient 7.0.7.0345.

VPN configuration is correct.

Could someone help me please?

Thanks in advance

Francesco

MAS Consulting

[Sheikh]

Hi Francesco,

Looks strange and not sure why it is behaving like that. Anyways on a side note, I will also try these.

- Check with older versions of Forticlient.

- Check windows routing table on your machine. This might gives you some clue.

- Check Windows updates and also try to update ethernet adapter drivers.

regards,

Sheikh

[francescobalatti]

Hi Sheikh,

- Where I can find older versions?

- Same routing table of my collegues

- Windows is updated and even the ethernet adapter driver

Same problem, 0 bytes received.

Any other ideas?

Francesco

[Sheikh]

Hi Ffrancescobalatti

Please login to support.fortinet.com. Click support >>Firmware download >>>In the select Product filed, choose Forticlient. Click Download >>>Windows >>>V6.00 or V7.00>>>Click relevant folders for V7 or V6>>>Now select the branch version for which you want to download and in the next screen, you will be shown a list to download Forticlient application.

regards,

Sheikh

[BSAdmin]

Hello Sheikh,

got the same problem here.

OS Version Windows 22H2 (Build 22621.900)

FortClient 7.7 (also testet 6.4.9 and 7.5)

Last time works yesterday 05:00 PM. Problem since today 08:00 AM.

I can see there was an update yesterday: 

Update for Windows (KB2693643)

regards,

Steffen

[francescobalatti]

Hi Sheikh,

Have I to uninstall the windows update?

Francesco

[BSAdmin]

Hey,

so i uninstall Windows KB5020044, KB5020622 and KB2693643 and now it works fine.

Semes there are problmes with one or all of these.

regards,

Steffen 

[francescobalatti]

Hi Steffen,

I don't have those windows update:

Windows OS 21H2 build 22000.1281

Francesco

[BSAdmin]

Mhm, do you get any infomration from the FortiClient Log?

I had this error, when i set the log level on "troubleshooting":

error sslvpn FortiSslvpn: 19616: Error find interface for local_gwy 651c0a0a

When i googled it, the only reason for that was another vpn installed on the client but thats not the case.

Steffen

[francescobalatti]

Hi Steffen,

I don't have any error in the log file, just I don't received any bytes.

Francesco