Due to self signed certificate Internet Explorer 7 and Firefox 3 gives security error while opening Plesk Control Panel URL . To bypass the error please follow the below mentioned steps.
For Internet Explorer 7
Type the Plesk Control Panel address e.g. https://yuordomain.com:8443, and in the page click on "Continue to this website (not recommended)".
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For Firefox 3
Type the Plesk Control Panel address e.g. https://yuordomain.com:8443, and in the bottom of the page click on "Or you can add an exception".

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