Could not issue a Let's Encrypt SSL/TLS certificate via Plesk

Linode Staff

I'm unable to get an SSL certificate via Plesk with the following error:

Could not issue an SSL/TLS certificate for example.net
Details
Could not issue a Let's Encrypt SSL/TLS certificate for example.net. Authorization for the domain failed.
Details
Invalid response from https://acme-v02.api.letsencrypt.org/acme/authz-v3/#######.

Details:

Type: urn:ietf:params:acme:error:connection

Status: 400

Detail: Fetching https://example.net/.well-known/acme-challenge/: Connection refused

1 Reply

Linode Staff

It appears that some other Plesk users have run into similar problems installing SSL certificates. It looks like this user was able to bypass the error by removing a JSON file in their /usr/local/psa/var/modules/letsencrypt/orders directory that contained a ‘pending’ status. Based on this thread, it also appears that this could be a potential bug in Plesk:

Could not issue a Let’s Encrypt SSL/TLS certificate

And this user was able to solve the problem by adding an alias to the nginx directives of their domain:

[Resolved] Could not issue a Let's Encrypt SSL/TLS certificate

This user was running into issues caused by a firewall blocking connections during the SSL request:

Unable to issue Let's Encrypt certificate in Plesk: "Timeout during connect (likely firewall problem)" OR "Error getting validation data"

It also looks like Plesk has a troubleshooting guide for SSL certificates that may be of some help:

Troubleshooting failed Let's Encrypt certificate installations for a domain in Plesk

And in case you haven't seen it yet, we have an Nginx guide that discusses how to configure SSL certificates with Nginx:

Getting Started with NGINX - Part 3: Enable TLS for HTTPS Connections

If you fix the issue, please reply here with the steps taken so that anyone else running into similar problems can try out your solution!

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