To add an iCloud calendar to Outlook for Mac without Microsoft cloud sync:
Type the iCloud application password over Password.No cloud sync: If your version of Outlook does not support or if you prefer not to use Microsoft cloud synchronization, see below. Click Continue again to add the iCloud calendar via cloud sync.Type the email address of your iCloud account.Click + ( Add an account) below the list of current accounts.
To add your calendars from iCloud to Outlook for Mac: