Functionality is available on the page  to import a certificate from your network, rather than generate a new one. Importing a certificate overwrites any certificate that currently exists.
            Import a certificate that is already located on your network
        
        
        
        Steps
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                On the page , click Import. A prompt displays to indicate that the existing certificate will be overwritten.
            
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                On the prompt, click Yes.
                An Import Certificate area appears below the Import button. 
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                Click Browse and navigate to the certificate file.
                When you select a file, its filename appears in the Certificate file field. File format must be .p12 or .pfx. 
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                In the text field Password, enter a password. Maximum length is 100 characters.
            
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                Click OK.
                The certificate is imported.