Hello,
I was advised by a Microsoft Support Engineer to post this question here.
I tried Googling this, but have not found an answer. The following information is taken from this article: http://support.microsoft.com/kb/2482059.
- In Outlook, click the File tab on the Ribbon, and then click Options.
- In the Outlook Options dialog box, click Trust Center in the navigation pane on the left side.
- Click the Trust Center Settings button in the details pane on the right side.
- In the Trust Center dialog box, click E-mail Security in the navigation pane on the left side.
- Click the Settings button in the details pane on the right side.
If the Signing Certificate and Encryption Certificate text boxes are blank, these blank boxes indicate that Outlook cannot automatically associate an S/MIME certificate with the email address that is specified in your email account. To try to configure the certificate(s) manually, click the Choose buttons.
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What if the certificate does not appear on the list when the Choose button is clicked?
I have a customer who requested a new certificate from our CA to be used for encrypted email. I have confirmed that the certificate is valid, meets all our requirements for a secure email certificate, is not expired, has been properly installed and appears in the Personal store on the local machine. However, it does not appear as an option when he clicks the Choose button.
What would cause this behavior?
Thanks in advance for any help that you can offer!
--Tom