How to fix ssl not accessible on Adobe Commerce (Magento)

Steps for Adobe Commerce (Magento)

1. Adobe Commerce (self-hosted or cloud) requires you to configure SSL at the server and application level.
2. Server level: ensure port 443 is open in your server's OS firewall (`ufw allow 443/tcp`) and any cloud security group (AWS Security Group, GCP Firewall Rule).
3. Install/renew your TLS certificate: use Let's Encrypt via Certbot (`sudo certbot --nginx -d yourdomain.com`) or upload your purchased certificate via your hosting control panel.
4. In Magento Admin → Stores → Configuration → General → Web → Base URLs (Secure), set the Secure Base URL to https://yourdomain.com/.
5. Also set 'Use Secure URLs on Storefront' and 'Use Secure URLs in Admin' to 'Yes' in the same configuration section.
6. Run `bin/magento cache:flush` from the command line to apply the changes, then verify https:// loads correctly.
7. For Adobe Commerce Cloud, SSL and port 443 are managed by Fastly CDN — configure the domain in the Cloud Console and Fastly will handle certificate provisioning automatically.

## Nginx — minimal HTTPS server block with HTTP redirect

server {
    listen 80;
    server_name yourdomain.com www.yourdomain.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    server_name yourdomain.com www.yourdomain.com;

    ssl_certificate     /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;

    ssl_protocols       TLSv1.2 TLSv1.3;
    ssl_ciphers         HIGH:!aNULL:!MD5;

    # ... rest of your config
}

What is ssl not accessible?

Every website that uses HTTPS — the padlock in the browser address bar — communicates over TCP port 443. When port 443 is closed or unreachable, your store cannot serve any encrypted traffic at all: visitors get browser security warnings, payment flows break, and search engines may refuse to index your pages. An SSL/TLS certificate is the digital credential that makes this encrypted connection possible, and port 443 is the network "door" it must be delivered through. If that door is shut, HTTPS simply does not work, regardless of whether you have a certificate installed.

Google has used HTTPS as a ranking signal since 2014, and a store that is unreachable over HTTPS will be demoted or deindexed entirely — costing you organic traffic and revenue. Modern browsers (Chrome, Firefox, Safari, Edge) display a full-page "Not Secure" or "Connection Refused" warning when port 443 is blocked, causing shoppers to abandon immediately and destroying conversion rates. Payment card industry rules (PCI-DSS) require all cardholder data to be transmitted over encrypted channels; without HTTPS you are non-compliant and risk losing the ability to accept card payments. Under privacy regulations (GDPR, CCPA), transmitting customer data unencrypted is a reportable data breach waiting to happen.

See the complete Ssl not accessible guide for every platform and the full background.