Fixing NET::ERR_CERT_DATE_INVALID Error

The NET::ERR_CERT_DATE_INVALID error disrupts secure connections to websites, signaling an issue with the SSL certificate. This browser warning can erode user trust and block access to your site. With AvaHost’s LiteSpeed Hosting and VPS plans, resolving this error is straightforward, especially using tools like AutoSSL. This guide explains the error’s causes and provides clear steps to fix it, ensuring secure, uninterrupted access to your AvaHost-hosted site.

What is the NET::ERR_CERT_DATE_INVALID Error?

The NET::ERR_CERT_DATE_INVALID error is a common browser warning indicating an issue with a website’s SSL certificate. This error means the browser cannot verify the site’s security certificate due to date discrepancies. As a result, users cannot securely connect to the site, and it may appear untrustworthy

Why Does the NET::ERR_CERT_DATE_INVALID Error Occur?

Several factors can cause this error:

  1. Expired SSL Certificate: The most common reason is that the site’s SSL certificate has expired and is no longer valid.
  2. Incorrect Device Date and Time: If the user’s device date or time is set incorrectly, the browser may consider the certificate invalid.
  3. Misconfigured SSL Certificate: An improperly installed or configured SSL certificate can trigger the error.
  4. Browser Cache and Cookies: Outdated cached data can interfere with SSL validation.
  5. Antivirus or Firewall Software: Security programs may mistakenly block or flag SSL certificates.
  6. Untrusted Public Networks: Using insecure Wi-Fi networks or VPNs that intercept SSL certificates can cause this error.
  7. Outdated Browser or Operating System: Older software versions may not support modern SSL protocols or recognize valid certificates.

How to Fix the NET::ERR_CERT_DATE_INVALID Error

There are several steps you can take to resolve this issue. Let’s go through them one by one.

1. Check Your Device’s Date and Time

Ensure your device’s date and time settings are correct. If they are incorrect, the browser may perceive the SSL certificate as invalid.

  • Windows: Open Settings > Time & Language > Date & Time, and enable “Set time automatically.”
  • Mac: Go to System Preferences > Date & Time and ensure the correct time zone and automatic updates are selected.

2. Refresh the Page and Restart Your Browser

Sometimes a simple page refresh or browser restart can clear up temporary issues. Try reloading the page by pressing Ctrl + R (Windows) or Cmd + R (Mac). If this doesn’t help, close and reopen your browser.

3. Clear Browser Cache and Cookies

Cached certificates can cause conflicts. Clearing your browser’s cache and cookies often helps.

  • Google Chrome: Go to Settings > Privacy and security > Clear browsing data, and select “Cookies and other site data” and “Cached images and files.”
  • Firefox: Open Settings > Privacy & Security > Cookies and Site Data, then click “Clear Data.”

4. Check the SSL Certificate’s Expiration Date

If you’re the website owner, ensure that the SSL certificate hasn’t expired:

  • Open the site in your browser.
  • Click on the padlock icon in the address bar.
  • Select Certificate (Valid) and review the expiration date.

If the certificate has expired, you’ll need to renew it through your SSL provider.

5. Temporarily Disable Antivirus and Firewall

Some antivirus or firewall programs may block SSL connections. Temporarily disable these security programs to check if the problem persists. If the issue is resolved, adjust your security settings or add the site as an exception.

6. Use Incognito Mode

Incognito or private mode can bypass certain caching issues. Open a new incognito window and try loading the site. If it works, the issue may be related to browser extensions or cached data.

7. Update Your Browser and Operating System

An outdated browser or operating system may fail to support newer SSL configurations. Update your browser to the latest version and ensure your operating system is also up to date.

8. Try a Different Network

If you’re using a public Wi-Fi network, switch to a trusted private network. Alternatively, disconnect from your VPN or try a different connection to see if the error disappears.

Conclusion

The NET::ERR_CERT_DATE_INVALID error is often linked to expired or misconfigured SSL certificates, incorrect device time settings, or browser cache issues. By following these steps, you can quickly fix the problem and restore secure access. If you’re a website owner, keeping your SSL certificates updated and correctly configured is crucial to maintain visitor trust and a secure connection.