Topics Map > Client Configuration > Desktop Office 365 Outlook on Mac - cannot send a group email to a contact list from a work email address - get an resolved recipients message I have been trying for hours to send a group email from a work email that is linked to my Outlook account.If you have an Office for home product and bought Office at a retail store or online store, but don't have a Microsoft account, it's. Before you can install Microsoft 365 or Office 2019 you need to associate it with a Microsoft account, or work or school account. Download and install or reinstall Microsoft 365 or Office 2019 on a PC or Mac.This article describes some useful tools for Microsoft Outlook for Mac. 3 minutes to read Applies to: Outlook for Mac for Office 365 In this article Summary. Hi Team, We are encountering a challenge when adding the Office 365 Account onto the Microsoft Outlook 2016 for Mac with the error' Authentication couldn't be completed' Adding the account asExchange.