TechMe

"Your connection is not private" on your own website

Visitors see "Your connection is not private" or "NET::ERR_CERT_DATE_INVALID" on your site. Why the security certificate failed and how it is usually fixed.

You might be seeing

  • Your connection is not private
  • NET::ERR_CERT_DATE_INVALID
  • NET::ERR_CERT_COMMON_NAME_INVALID
  • Warning: Potential Security Risk Ahead

What it means

Your website uses a security certificate (the padlock, also called SSL or TLS) to prove to browsers that it really is your site. Browsers show this full-page warning when the certificate has expired, belongs to a different address, or cannot be verified. Most visitors leave at this point, so it is worth fixing quickly.

What usually causes it

  • The certificate expired because automatic renewal failed. Free certificates last 90 days or less and must renew by themselves.
  • The domain was moved to a new host or DNS provider, and the new place never issued a certificate.
  • The address does not match, for example the certificate covers example.com but not www.example.com.
  • A paid certificate was not renewed when the invoice came.

What you can check yourself

  1. Click “Advanced” or the warning details in the browser. The code tells you the reason: DATE_INVALID means expired, COMMON_NAME_INVALID means wrong address.
  2. Try both addresses: with and without www. Note which one fails.
  3. Look in your hosting panel for “SSL”, “TLS” or “Let’s Encrypt”. Many hosts show the expiry date and have a “renew” or “run AutoSSL” button.
  4. Did you recently change host, DNS or Cloudflare settings? That is a common trigger.

Do not tell customers to click “proceed anyway”. The warning also protects them from real attacks.

When to ask for help

  • Renewing in the hosting panel fails or shows an error.
  • The site uses Cloudflare and you are unsure which side should hold the certificate.
  • It keeps expiring again every few months.

Tell me the exact warning code and where your site is hosted. Most of these are fixed the same day, and I also make sure renewal works automatically next time.

Updated