SSL Certificate Information
The domain registered in the SSL certificate must match the domain of your website. If it does not match, it may result in an SSL mismatch error, which can be fixed by simply deleting the SSL certificate and installing a new one.
The situation can become even worse and more confusing if wildcard SSL certificates are involved. This type of SSL certificate is best suited for organizations with multiple subdomains.
Sometimes an SSL certificate will specify a subdomain as the common name for example, domain.exampleom. If you are using a wildcard certificate for a subdomain and you see the NET::ERR_CERT_COMMON_NAME_INVALID error, there is a higher chance that the SSL certificate does not include the subdomain you are trying to visit.
So, when checking an SSL certificate, always belgium telegram data keep in mind that wildcard SSL certificates only protect one level of subdomains. For example, you need to have another certified or exampleom and subdomain.exampleom.
Check SAN Subject Alternative Name certificates
A SAN Subject Alternative Name certificate is a type of SSLTLS certificate that is used to secure multiple domain names andor IP addresses with a single certificate. This is useful for organizations that manage multiple domains and TLD variants because it simplifies certificate management and reduces costs.
If your organization uses a SAN certificate for a website, check the certificate details for the list of domains it protects. If the web address is not listed, the certificate does not cover it.