Removing Certificates with Internet Explorer in PowerPoint 2010 for Windows

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. Using the process explained, 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.

We assume that you have at least one or more certificates created, learn how to create digital certificates outside PowerPoint, and acquire or create a digital signature within PowerPoint.

Follow these steps to remove a digital certificate in PowerPoint 2010 for Windows:

1. Launch Internet Explorer. Within this web browser, select the Tools | Internet options menu option, as shown in Figure 1, below.
2. 
   Figure 1: Internet options selected
2. Doing so brings up the Internet Options dialog box, as shown in Figure 2, below. Within this dialog box, make sure that you select the Content tab.
3. 
   Figure 2: Internet Options dialog box
4. Now, click the Certificates button, as shown highlighted in red within Figure 2, above.
3. This action opens the Certificates dialog box, as shown in Figure 3, below. Make sure that within this dialog box, you select the Personal tab. All the Digital Certificates available on your system can be viewed within the Personal tab of the Certificates dialog box.
4. 
   Figure 3: Certificates dialog box
5. Now, select the certificate you want to remove, and click the Remove button, as shown highlighted in red within Figure 3, above.
4. Doing so brings up the Certificates window, as shown in Figure 4, below. Click the Yes button to remove the selected certificate.
5. 
   Figure 4: Certificates window
5. This removes the selected certificate from the list, as shown in Figure 5, below. Compare with Figure 3, above.
6. 
   Figure 5: Selected certificate removed
6. Make sure you save your presentation after removing the signature.