If you get the following dialogue:
Note the error stating “The name on the security certificate is invalid or does not match the name of the site”. This simply means that the URL typed in the browser window does not match the site named in the certificate. For instance, if the SSL certificate was issued to “secure.ssl.com”, and it was installed on server where multiple domain names share this certificate, then visiting the other domain names such as “www.ssl.com” or “shopping.whatever.com” will result in this pop-up window. To eliminate this pop-up, be sure the URL in the browser and the site stated on the certificate match. In this case, type “secure.ssl.com” to avoid the pop-up. Otherwise, consider purchasing a wildcard certificate if you require using additional subdomains.