Challenge failed for domain (domain unauthorized)

My domain is:

I ran this command:

sudo /usr/local/bin/certbot-auto certonly --csr request.csr --no-bootstrap

It produced this output:

Plugins selected: Authenticator standalone, Installer None
Performing the following challenges:
http-01 challenge for
Waiting for verification…
Challenge failed for domain
http-01 challenge for
Cleaning up challenges
Some challenges have failed.


My web server is : tomcat 8.5.50

The operating system my web server runs on is : debian 9

I can login to a root shell on my machine : yes

The version of my client is 0.28.0

1 Like

You can’t use --standalone if nginx is already listening on your port 80.

You should use --webroot or --nginx


Another instance of Certbot is already running.

I don’t understand. Please tell me more.

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