Not Allowed applications are applications that have been marked as Not Allowed on the Software Catalog page. Windows and Mac applications can be marked as Not Allowed only if they are classified as Discovered, Not Discovered, or Locally Cataloged applications. Applications that are Uncataloged cannot be marked as Not Allowed until they are added to the Software Catalog. Applications that are marked as Not Allowed can be blocked from running on managed devices if those devices have an Application Control-enabled label applied to them. See Using Application Control.