This policy setting allows you to turn off the trusted documents feature. The trusted documents feature allows users to always ...

This policy setting allows you to turn off the trusted documents feature.  The trusted documents feature allows users to always enable active content in documents such as macros, ActiveX controls, data connections, etc. so that they are not prompted the next time they open the documents.  Trusted documents are exempt from security notifications.

If you enable this policy setting, you will turn off the trusted documents feature.  Users will receive a security prompt every time a document containing active content is opened.

If you disable or do not configure this policy setting, documents will be trusted when users enable content for a document, and users will not receive a security prompt.