Disable all macros except digitally signed macros - Macros are disabled, but security alerts appear if there are macros present. ...

Disable all macros except digitally signed macros -  Macros are disabled, but security alerts appear if there are macros present. However, if the macro is digitally signed by a trusted publisher, the macro runs if you have trusted the publisher. If you have not trusted the publisher, you are notified to enable the signed macro and trust the publisher.