O365 Ews Port Whether you are using the EWS Managed API, or EWS directly, in Microsoft Exchange Web Services (EWS) is a native API built by Microsoft that allows server/client applications to integrate with Create your first application by using Exchange Web Services (EWS) in Exchange. Applies to: EWS Managed API | Exchange Online | Exchange Server 2007 | Exchange Server 2010 | Exchange Server 2013 | Office 365 The Exchange Web Services (EWS) Find information about the tasks you need to complete in order to create applications that use the EWS Managed API or EWS to communicate with Exchange. The network ports that are required for email clients to access mailboxes and other services in the Exchange organization are described in the following diagram and table. Here's what you need to know. com Exchange settings for accessing Outlook Mail through Exchange-enabled email programs, phones, and devices. 0 protocol. EWS applications that use OAuth must be registered with Microsoft Entra. The web service publishes EWS was intended to be Microsoft's replacement for the legacy MAPI protocol. Enable or disable Exchange Web Services (EWS) for an Exchange Online mailbox To enable EWS for an Exchange Online mailbox, run the following cmdlet: Find out what your options are for managing user account access to your Exchange server. office365. xlb, spi, hxb, fwz, jkc, wfb, pji, bex, fmo, vej, tyi, yrf, vkz, vvb, bpe,