In a previous tutorial, you learned how you can create a self-signed digital certificate outside PowerPoint, and then mark this as a trusted certificate. This way you can create multiple trusted or non trusted certificates, and use them within PowerPoint or even other Microsoft Office applications. Although these certificates can be used in PowerPoint, you cannot remove these certificates from within PowerPoint. In this tutorial you’ll learn how to remove any of the certificate(s) from the system, through Microsoft’s Internet Explorer web browser — note that once a certificate is removed, it will be not available to be used within PowerPoint or any other Microsoft Office application.
Learn how to remove digital certificates in Internet Explorer.

