The NET.ERR_CERT_COMMON_NAME_INVALID error code has many possible causes and fixes. Let’s take a look at some common problems that can cause this error. First, let’s take a look at domain names. Domain names have two versions, one with WWW, and the other without. Your common name is the part that you see on both versions. Your domain name may also have a subdomain that looks like a shortened version of your web address. This makes it essential to choose a name for your SSL certificate that matches the web address or search bar.

Common name mismatch errors happen when the domain name on an SSL/TLS certificate does not match the domain name listed on the certificate. Common names can be listed on a certificate as either the subject alternative name or as a wildcard. You can also get this error if your domain name is not listed on your SSL certificate. In this case, you’ll need to either change your domain name, or install a new one.

Another common cause of the NET.ERR_CERT_COMMON_NAME_INVALID error message is an outdated version of your browser or operating system. Fortunately, the majority of errors that cause this error are easily fixable. If this error message is stopping you from using your website, try updating your browser and operating system. Keeping your website up and running is vital for consumer confidence and sales.