Could not issue a Let's Encrypt SSL/TLS certificate for Authorization for the domain failed


Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g., so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:, which is mapped to

I ran this command: Plesk - Add Domain to mapped Domain - No issue with other domains

It produced this output:

Error: Could not issue a Let’s Encrypt SSL/TLS certificate for Authorization for the domain failed.
Invalid response from
Type: urn:acme:error:unauthorized
Status: 403
Detail: Invalid response from "

<html class" My web server is (include version): The operating system my web server runs on is (include version): My hosting provider, if applicable, is: Webfusion I can login to a root shell on my machine (yes or no, or I don't know): I'm using a control panel to manage my site (no, or provide the name and version of the control panel): Plesk


I see that you are using Plesk control panel.
But can you also login to a root shell on my machine?

403 errors are generally authentication related.


Those names aren’t pointing to the same IP (that may be part of the problem…)


You star, thank you. I’ll investigate the DNS settings


This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.