When a client, such as a web browser or a server, connects to a website or a server over a secure protocol like HTTPS, it verifies the server's identity by checking its SSL/TLS certificate. The certificate contains the server's public key and its domain name or hostname. The client checks if the domain name or hostname in the certificate matches the one it's trying to connect to. If they don't match, the client aborts the connection and displays a "certificatenamecheckfailed" error.
The Mysterious Case of the Expired Certificate certificatenamecheckfailed
In cloud environments like Azure Front Door, this error frequently appears if the backend pool FQDN does not match the certificate presented by the backend server. When a client, such as a web browser