Knowledgebase ProCall Enterprise Dialing from Microsoft Outlook Contacts Phone numbers in Microsoft Outlook 2016 cannot be dialed by clicking Current: Microsoft Office Click-to-Run installations usable only with Microsoft Exchange Web Services (EWS) Microsoft Office Click-to-Run installations usable only with Microsoft Exchange Web Services (EWS) State of knowledge March 2021 The MAPI interface is not present in all variants of a Microsoft Office Click-to-Run installation! For a Click-to-run installation, the connection must be made via Microsoft Exchange Web Services (EWS).
