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AWS Site to Site Doesn't work after firmware update 7.4.11 even though tunnel is showing up

Forum|Forum|4 months ago
February 6, 2026
1 reply
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Dear All,

Recently I have upgraded my FW from 7.2.12 to 7.4.11 and since then my AWS site to site VPN is not working even though tunnel is showing up but not able to send/receive the traffic. I have even disabled the NAT but not working and as soon as i downgrade to 7.2.12 it starts working. Please suggest what should I do here.

FW - 80e

FortiGate

Staff

Hi Ashish-pal,

I am unable to find any known issues in version 7.4.11 related to tunnel establishment with no traffic flow.

https://docs.fortinet.com/document/fortigate/7.4.11/fortios-release-notes/236526

Please let us know if you have collected logs on version 7.4.11. If so, kindly attach them here for further review.

Please refer to the document below on how to handle a scenario where the IPsec Tunnel is up but no traffic is passing through the tunnel:

https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-IPsec-Tunnel-up-but-no-traffic-is-passing/ta-p/217330

Regards,
Aman