IIS 7 and Above
SSL Certificate IIS 7 and 8
Re: SSL Certificate IIS 7 and 8
Mar 18, 2019 05:26 AM|Jalpa Panchal|LINK
Hi Nick Wilde,
SSL common name mismatch error occurs when there is a mismatch between the domain name and the SAN or common name of the SSL certificate.
To fix this error identify the type of SSL certificate installed for your website on the server.then you must analyze why someone intending to visit some other domain got routed to your website.study the details of your SSL certificate and analyze the other
domain names listed as a SAN.
For more detail you could prefer below article: