IIS Certificate configuration (Windows 2008)

I have installed a certificate for my site. When I open the site in CHROME I get the following.
What have I done wrong?  I don't get any messages in IE.

You attempted to reach www.abc.com, but instead you actually reached a server identifying itself as ABC.com. This may be caused by a misconfiguration on the server or by something more serious. An attacker on your network could be trying to get you to visit a fake (and potentially harmful) version of www.abc.com

You should not proceed, especially if you have never seen this warning before for this site.
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Sushil SonawaneConnect With a Mentor Commented:
You certificate conman FQDN name is abc.com and you are access the www.abc.com. To resolve the issue you have to add another SAN name "www.abc.com" in your certificate or assign the certificate with the FQDN "www.abc.com".


If you using your own CA certificate and accessing web site outside the network domain then you will got above mention an error you can safely ignore. But you are use third party certificate then you have to add another SAN name in certificate "www.abc.com".
JElsterAuthor Commented:
So the domain name is case sensitive ?
When I enter caps in browser it changes it to lower case?
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