Guide CyberPanel SSL: Issue Let's Encrypt for Your Website and Fix Failed Certificates

**JAY**

CyberPanel SSL: Issue Let's Encrypt for Your Website and Fix Failed Certificates

CyberPanel gives every website a free Let's Encrypt certificate and renews it automatically. Most of the time you don't do anything: if the domain points to the server when you create the site, it comes up with https straight away. This guide covers checking the certificate, issuing it again by hand, and what to do when it fails.

Watch it: Part 5 of the CyberPanel course, Free Let's Encrypt SSL

This is Part 5 of 10 in our free CyberPanel Full Course. The written steps below go into more detail.

Check the certificate
Open Websites, click your domain to open its workspace, go to the SSL & Domains tab and click Manage SSL. Choose the website and CyberPanel shows the current certificate:
[Image: attachment.php?aid=457]

For our test site cyber.adminslab.com: Status Active, issued by Let's Encrypt, expires 2027-01-22, 89 days remaining. Let's Encrypt certificates last 90 days, and CyberPanel renews them before they expire.

The Issue SSL button requests a new certificate for the site. Use it after fixing DNS, after adding a www record or an alias, or when the status isn't Active.

You can also see the certificate from SSH:

Code:

echo | openssl s_client -connect cyber.adminslab.com:443 -servername cyber.adminslab.com 2>/dev/null | openssl x509 -noout -issuer -enddate -ext subjectAltName

Ours printed:

Code:

issuer=C = US, O = Let's Encrypt, CN = YR2
X509v3 Subject Alternative Name:
    DNS:cyber.adminslab.com
notAfter=Jan 22 10:30:23 2027 GMT

The Subject Alternative Name line lists every name the certificate covers. Ours only has

Code:

cyber.adminslab.com

, because we never created a

Code:

www.cyber

DNS record. That's correct: Let's Encrypt only includes names that resolve to the server.

Before you click Issue SSL
Let's Encrypt checks that you control the domain by fetching a file from it over plain http (port 80). So:

The domain (and www, if you want it) must point to this server:
Code:
dig +short yourdomain.com
Port 80 must be open in the firewall and at your VPS provider. CyberPanel opens it by default.
If the domain is on Cloudflare, set the record to DNS only (grey cloud) while issuing. With the orange cloud on, use Cloudflare's SSL mode Full (strict) after the certificate is issued.
No redirect or rewrite rule in
Code:
.htaccess
should block
Code:
/.well-known/acme-challenge/
.

Then click Issue SSL and wait for the success message.

Adding www later
Created the site without a www record? Add the A record for

Code:

www

, wait until

Code:

dig +short www.yourdomain.com

shows your server IP, then click Issue SSL again. The new certificate covers both names.

Why issuing fails, and the fix

DNS points elsewhere (old host, parked page, wrong IP): fix the A records and wait for them to update. Most failures are this.
IPv6 (AAAA) record pointing to the wrong place: Let's Encrypt prefers IPv6 if the record exists. Delete the AAAA record or make it point to this server.
Cloudflare proxy (orange cloud) during issuing: switch to DNS only, issue, then switch back.
Port 80 closed at the provider's firewall or in firewalld: see the CyberPanel firewall guide.
Rate limit: after many failed tries Let's Encrypt blocks new attempts for about an hour (failed validations) or longer (too many certificates for the same names in a week). Fix the cause first, then try once.
Site shows the old certificate after issuing: restart the web server,
Code:
systemctl restart lsws
, and reload in a private window.

When nothing helps, the log usually says why:

Code:

/home/cyberpanel/error-logs.txt

and

Code:

/usr/local/lsws/logs/error.log

.

Force https
Having a certificate doesn't send visitors to https by itself. For WordPress, set both URLs in Settings > General to https. For any site, you can add this to the top of

Code:

public_html/.htaccess

(OpenLiteSpeed reads it):

Code:

RewriteEngine On
RewriteCond %{HTTPS} !=on
RewriteRule ^(.*)$ https://%{HTTP_HOST}/$1 [R=301,L]

Restart the web server after changing .htaccess:

Code:

systemctl restart lsws

.

The panel's own certificate (port 8090)
The panel on port 8090 uses a separate, self-signed certificate after install, which is why your browser warns you. Giving the panel a real certificate on its own hostname is a separate step; we cover it in its own guide.

New site? Start with creating a website in CyberPanel.

More CyberPanel guides

Tested on CyberPanel 3.0 (build 8, OpenLiteSpeed edition) on Ubuntu 24.04, October 2026. Menu names can change slightly between versions.

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Guide CyberPanel SSL: Issue Let's Encrypt for Your Website and Fix Failed Certificates

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