Renew a certificate before it expires

tls-cert-expiring · Updated Sep 24, 2026

Your certificate expires soon. Once it lapses browsers block the site outright, so renew now and put automatic renewal in place this time.

Why this matters

Your SSL certificate expires soon and has not been renewed yet. Once it expires, browsers block visitors with a warning page, but it is not exploitable. Check that automatic renewal is working, or renew it by hand.

Your stack

CDN and edge

Cloudflare Vercel

Web servers

Nginx

Cloudflare

1 Cloudflare certificates auto-renew
2 If expiring, check for DNS validation issues in the dashboard

Nginx

1 Set up automated renewal with Certbot or your CA
2 Test renewal: certbot renew --dry-run

bash

# Test renewal
sudo certbot renew --dry-run

# Add a cron job for auto-renewal
0 0 * * * /usr/bin/certbot renew --quiet

Related fixes

Renew an expired TLS certificate
Replace a self-signed certificate
Upgrade a short TLS private key
Disable old TLS versions

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