Renew an expired TLS certificate

tls-cert-expired

Your certificate has expired, so browsers show a full-page interstitial and API clients refuse to connect. Renew it and automate renewal.

Why this matters

Your SSL certificate has expired. Browsers show a full-page warning that blocks visitors, but this is not exploitable — an attacker cannot leverage an expired cert. Renew it to restore access.

Your stack

Cloudflare

1 If using Cloudflare's free SSL, check SSL/TLS > Edge Certificates
2 Certificates auto-renew, but check for DNS validation issues

Cloudflare docs

Nginx

1 Renew your certificate (e.g., certbot renew)
2 Update the cert/key paths if they changed
3 Reload Nginx

bash

# Using Let's Encrypt / Certbot
sudo certbot renew
sudo systemctl reload nginx

Does your app still have this?

Scan your domain

Renew an expired TLS certificate

CDN and edge

Web servers

Cloudflare

AWS CloudFront

Vercel

Nginx

Apache