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If Install Certificate is not enabled then …
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select the Details tab in the Certificate dialog
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Select the root node in the list of certificate paths. In many cases there will be just one.
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Click View Certificate.
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In the second Certificate dialog, click the Details tab.
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then click Copy to File.
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In Start the Certificate Export Wizard by clicking Next, accept the default settings, enter a meaningful certificate name to export it to your local system, and click Finish. Now the certificate has been successfully exported to a file.
In the Certificate Export Wizard success message, click OK Finish.
In the second Certificate dialog, click OK.
In the first Certificate dialog, click OK.
You can now follow your operating system’s process for importing the certificate file into the Trust Root Certification Authorities store.