I have followed these steps.

1. Create a digital certificate using SelfCert.
2. In Outlook > Developer
- Visual Basic > Tools > Digital Signature; choose the certificate.
- Macro Security > Macro Settings; select "Notifications for digitally signed macros, all other macros disabled."
3. Close Outlook; save VBA project when prompted.

However, when I re-open Outlook, the digital signature is not signed in, and the macros wll not run (Outlook says they are disabled).

How can I fix this?