# Authentication problem on certificate creation

**URL:** <https://community.letsencrypt.org/t/authentication-problem-on-certificate-creation/93079>\
**Category:** Help\
**Created:** [May 8, 2019, 12:14pm UTC](https://community.letsencrypt.org/t/authentication-problem-on-certificate-creation/93079 "2019-05-08T12:14:05Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![matthiasunt](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/matthiasunt/32/33129_2.png) [@matthiasunt](https://community.letsencrypt.org/u/matthiasunt)\
**Post date:** [May 8, 2019, 12:14pm UTC](https://community.letsencrypt.org/t/authentication-problem-on-certificate-creation/93079/1 "2019-05-08T12:14:05Z")

</div>

My domain is: `shuttlefinder.app`

I ran this command: `sudo certbot --nginx -d shuttlefinder.app -d *.shuttlefinder.app`

It produced this output:

```auto
Saving debug log to /var/log/letsencrypt/letsencrypt.log

Plugins selected: Authenticator nginx, Installer nginx

Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org

Obtaining a new certificate

Performing the following challenges:

Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA. You may need to use an authenticator plugin that can do challenges over DNS.

Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA. You may need to use an authenticator plugin that can do challenges over DNS.

```

My web server is (include version): nginx/1.10.3 (Ubuntu)

The operating system my web server runs on is (include version): Ubuntu 16.04.5 LTS

My hosting provider, if applicable, is: DigitalOcean

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 0.31.0

---

<div class="post-metadata">

**Author:** ![JuergenAuer](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/juergenauer/32/26491_2.png) [@JuergenAuer](https://community.letsencrypt.org/u/JuergenAuer)\
**Post date:** [May 8, 2019, 1:45pm UTC](https://community.letsencrypt.org/t/authentication-problem-on-certificate-creation/93079/2 "2019-05-08T13:45:38Z")

</div>

Hi @matthiasunt

> [@matthiasunt](#):
>
> \*.shuttlefinder.app

if you want to create a wildcard certificate, you have to use dns-01 validation.

So check, if you can use `--dns-digitalocean`

[https://certbot.eff.org/docs/using.html](https://certbot.eff.org/docs/using.html)

as plugin.

If not, you have to use `--manual`.

---

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/letsencrypt/original/3X/c/a/ca6c06ea1ea201324bba7048c6841ce60236468d.png) [@system](https://community.letsencrypt.org/u/system)\
**Post date:** [June 7, 2019, 1:58pm UTC](https://community.letsencrypt.org/t/authentication-problem-on-certificate-creation/93079/3 "2019-06-07T13:58:21Z")

</div>

Closed on June 7, 2019, 1:58pm UTC

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