Challenge failed for domain with "unauthorized error"

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:

I ran this command: certbot-auto certonly --debug-challenges --webroot --webroot-path /opt/apache-tomcat-9.0.10/webapps -d

It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Cert is due for renewal, auto-renewing…
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for
Using the webroot path /opt/apache-tomcat-9.0.10/webapps for all unmatched domains.
Waiting for verification…

Challenges loaded. Press continue to submit to CA. Pass “-v” for more info about

Press Enter to Continue
Challenge failed for domain
http-01 challenge for
Cleaning up challenges
Some challenges have failed.


My web server is (include version): Tomcat 9.0.10

The operating system my web server runs on is (include version): openSUSE 42.2 (x86_64)

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): certbot 1.0.0

1 Like

I have already discovered what’s the problem. My router’s NAT was incorrectly configured.


@lpascual Glad you were able to figure out the problem! Thanks for reporting back with the solution :tada:


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