| Description | This article describes how to block WhatsApp file uploads using Web Filter when having the error 'Couldn't send this message' |
| Scope | FortiGate. |
| Solution |
Create a firewall policy and enable a deep inspection profile.
Then start to upload files or images to WhatsApp to generate the logs.
Block those URLs using URL filter.
It is also necessary to add '*.cdn.whatsapp.net*'.
Then, enable the web filter profile on the firewall policy.
When trying to upload a file, it will show the error 'Couldn't send this message'.
It is also possible to see logs from the web filter.
Note: This will work if the user is using web.whatsapp.com.
Related article: Technical Tip: Block WhatsApp file uploads action by using application control |
