Certificate is not valid

1. What does it mean if a certificate is not valid?
2. Why is my SSL certificate invalid?
3. How do I force Chrome to accept a certificate?
4. What is certificate validity?
5. Why am I getting a certificate error?

What does it mean if a certificate is not valid?

The invalid or incomplete certificate chain error happens when the browser is not able to establish a valid chain of trust between the certificates of your browser and the list of trusted root certificates. Every browser maintains a set of trusted root certificates.

Why is my SSL certificate invalid?

An invalid SSL Certificate can occur when you try installing an SSL/TLS certificate on the server, but the certificate details are not correct. The installed certificate has been purchased illegally, or it's revoked. There's a broken certificate chain of trust.

How do I force Chrome to accept a certificate?

Navigate to the site with the cert you want to trust, and click through the usual warnings for untrusted certificates. In the address bar, right click on the red warning triangle and "Not secure" message and, from the resulting menu, select "Certificate" to show the certificate.

What is certificate validity?

Digital certificates validity periods are specific to each type of certificate. Currently, code signing certificates are valid for up to three years while SSL certificates are valid for just over one year.

Why am I getting a certificate error?

This often means that the security certificate was obtained or used fraudulently by the website. A website is using a certificate that was issued to a different web address. This can occur if a company owns several websites and uses the same certificate for multiple websites.