These new options are located in the Excel Trust Center (File Options Trust Center Trust Center Settings External Content). They're listed as follows. Enable Dynamic Data Exchange Server Lookup. Select this option if you want to enable DDE server lookup. Microsoft fully supports our commitment to security and data privacy as defined by internal and customer-driven requirements.This was a major differentiator for. You have changed your Trust Center settings for one, or more, active-content types. To see your security settings click the File tab. Click Options. Click Trust Center, and then click Trust Center Settings. Or you can learn more in View my options and settings in the Trust Center. Use Trust Center to Keep your Documents and Computer Healthy. Step 1: Trust Center is an option which is in File ⇒ Options ⇒ Trust Center. Here trust center is the last option on this list when you click on new window gives some primary information about trust center. Here guide you that if you want to know more about protecting your privacy and security visit the Microsoft-office website. Then on the last part you have Trust Center Settings. In an Office program, on the File tab, click Options. Click Trust Center, and then click Trust Center Settings. The following screen is an example from Word: Click the area that you want (on the left pane) and make the selections you need. For example, to change the privacy settings, click.