404 on Submit-ChallengeValidation when using LetsEncrypt Staging about posh-acme HOT 1 CLOSED

New-PACertificate $certNames -directory LE_STAGE -Verbose -Debug

DEBUG: Calling AcmeDns plugin to add _acme-challenge.example.com TXT with value REDACTED
VERBOSE: No existing acme-dns registrations found
VERBOSE: Registering new subdomain on acme-staging-v02.api.letsencrypt.org
DEBUG: POST https://acme-staging-v02.api.letsencrypt.org/register
{}
Submit-ChallengeValidation: /home/ubuntu/.local/share/powershell/Modules/Posh-ACME/4.20.0/Public/New-PACertificate.ps1:253
Line |
 253 |          Submit-ChallengeValidation
     |          ~~~~~~~~~~~~~~~~~~~~~~~~~~
     | 404 page not found

Hi @mkennedy-mqual, thanks for reaching out. The command you used doesn't have any Plugin or PlugArgs parameters in it. But your debug output implies the module is trying to use the AcmeDns plugin. Had you previously tried to use AcmeDns with this domain?

I'm not sure if it's just an artifact of you trying to redact your log or not, but the line that says, "Registering new subdomain on acme-staging-v02.api.letsencrypt.org" implies that you may have used an invalid acme-dns URL. That hostname is the actual ACME staging server for Let's Encrypt. It doesn't work as an acme-dns server.

Have you had a look at the acme-dns usage guide?
https://poshac.me/docs/v4/Plugins/AcmeDns/

from posh-acme.