I did the following while installing the certificate in question. 1) Logged in Plesk Admin Panel, and from there went to Server->Certificates. Added a new certificate and certificate CA, using the relative private key. 2) Assigned the certificate to the exclusive IP address i want to, via Server->IP addresses. However, when i access the domain in question, a warning pop up indicates that the certicate is not valid. The certificate that the browser receives is not the one that i've set up in Plesk but the Default certificate(as indicated in Server->Certificates), although the domain's IP is not set to this. Also, this does not seem to be a problem whenever i'm using Firefox browser, the error only occurs in Internet Explorer. Any clues?