Loading...Learn how to fix the invalid certificate error in Google Chrome and Firefox
Did you know that every SSL/TLS certificate is issued with a specific validity period? This period encompasses the certificate’s issuance and expiration dates. So, if you see the SSL/TLS certificate-related error messages “NET_ERR_CERT_DATE_INVALID” or “SEC_ERROR_EXPIRED_CERTIFICATE ” in your browser when using Chrome or Firefox, it typically means the site’s SSL/TLS certificate is being used beyond its validity period and is no longer trustworthy.
In other words, any site using this certificate isn’t secure, and any data transmitted is at risk of compromise by man-in-the-middle (MitM) attacks. Not to mention the business risks and downtime issues your site or services will experience as the result of an expired certificate.
Examples of These SSL Certificate Error Codes
- Chrome: NET_ERR_CERT_DATE_INVALID, ERR_CERT_DATE_INVALID
- Firefox: SEC_ERROR_EXPIRED_CERTIFICATE
- OpenSSL: X509_V_ERR_CERT_HAS_EXPIRED
But what does this error look like in the wild?
Example: What the Error ‘ERR_CERT_DATE_INVALID’ Looks Like
Image caption: The image shows the expired security certificate error in Chrome.
Now that you know what this error is, it’s now time to learn how to fix the invalid certificate error in Google Chrome and Firefox.
How to Fix This SSL Certificate Validity Error
- Purchase a new SSL certificate. You can get the best SSL/TLS certificate from a trusted reseller like CheapSSLsecurity.com.
- Install the certificate on your website. The directions for this vary based on your specific system. Check out our SSL certificate installation guides page to access step-by-step tutorials.
Do you want to confirm that your website’s SSL/TLS certificate has expired? Discover how to do it in three simple steps.
