[SOLVED] Error: Let's Encrypt validation status 400 (Details: 403)

Hi!

I have this message when I try to create a SSL certificate:

Error: Let's Encrypt validation status 400 (publicitem.eu). Details: 403:"212.129.16.165: Invalid response from http://publicitem.eu/.well-known/acme-challenge/puMKt1PGoAkm1Ohz0B6chpwJW9ipueO9nryGdl6Z2lY: 404"

What can I do now?

Thanks!

What is the DNS template you are using?

Do you have the CAA record added? Also, give some time for the DNS records to replicate worldwide. Like say 45-90 minutes minimum.

Hi!

Here is my DNS: Screenshot 2026 02 07 at 18 13 17 DNS jeanne hebergement club Hestia Control Panel hosted at ImgBB — ImgBB

I just add it by creating the website in HestiaCP. I should perhaps just wait.

I have no CAA, and I don’t know what template I use for DNS.

Okay, is default DNS one. If you keep facing the issue, after say 30 or so minutes, go back to edit DNS domain, and from template, of default, switch to child-dns, if you have setup name server at your registrar.

FYI: Although your DNS seems to have propagated now. Try after 10 minutes.

https://dnschecker.org/#CAA/hebergement.club