Problem with WhatsApp Trigger: Callback verification failed (#2200) - Request Timeout

[Eduardo_Mendez]

Hello everyone,

I am configuring the WhatsApp Trigger node in n8n to receive messages, but when attempting to verify the webhook in Meta/WhatsApp, I encounter the following error:

(#2200) Callback verification failed with the following errors: HTTP Status Code = 408; HTTP Message = Request Timeout

[barn4k]

hello @Eduardo_Mendez

That mean something with the webhook, or it’s not accessible from the internet. How it looks?

[Eduardo_Mendez]

I have found the solution. Currently, I have n8n installed on a virtual machine in Google Cloud. To resolve this issue, it is necessary to create firewall rules that allow the machine to access ports 5678, 443, and 80.