C22.12 introduces a new feature to Share confidential files/folders with external users. This increases efficiency when sharing confidential documents; users no longer need to take screenshots and put them in email.
You need to disable the Files Sync & Share service but the option is grayed out and if you move the mouse over the option you see the message: "You cannot disable a service with non-zero usage. Contact the Support team for assistance." even though the storage has 0GB. The portal understands the usage as having users with the service enabled, and not just with files saved on cloud storage.