During the process of Authorizing Office 365 admin or using the Office 365 sync wizard, an error message may appear indicating that some Office 365 accounts are invisible. This problem can be addressed by verifying if the Office 365 admin possesses a valid OneDrive and Outlook account, disabling the two-factor authentication temporarily, de-installing and reinstalling cloudHQ, and ensuring that cloudHQ and 3rd-party applications are enabled and have the requisite permissions.