Legacy Invite Expiration cancels outstanding invites to join a Box enterprise that have not been accepted after one year. This feature is enabled automatically for all Box enterprises and does not require any action from admins.
Note: A previous version of this announcement (found below) indicated this feature would be opt-in. We've since adjusted to automatic enablement to make it easier for admins to remove legacy invites from their instance.
We are releasing a new feature called “Legacy Invite Expiration” which allows admins to retroactively cancel outstanding invites (to join their Box enterprise) that were made prior to the release of the "Auto-expiration" setting.