Unable to apply, error 400


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. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is: demo12.giannip.com

I ran this command: I used to apply let’s encrypt via cpanel

It produced this output:

There was a problem processing your request

Error issuing certificate
Failed to issue certificate
Updating challenge for www.demo12.giannip.com: acme: error code 400 “urn:ietf:params:acme:error:dns”: DNS problem: NXDOMAIN looking up TXT for _acme-challenge.www.demo12.giannip.com (order URL: https://acme-v02.api.letsencrypt.org/acme/order/6024855/16370886)

My web server is (include version):

The operating system my web server runs on is (include version): Linux (i don’t know)

My hosting provider, if applicable, is:

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

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): cpanel 70.0.52


Hi @giannip

if you want to use the dns-01 - challenge, you have to create a dns-entry (type: txt)


with a hash-value.

I can’t find such a value. So your challenge is invalid.



You are using a commercial plugin for cPanel and will need to get in touch with us via the support form at https://letsencrypt-for-cpanel.com/contact where we can provide further assistance (and include the support logs if possible). Sorry, these forums are not a support channel for this plugin :slight_smile:


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