Examples for apps that are based on legacy authentication are:Īpps using mail protocols like POP, IMAP, and SMTP Typically, these protocols can’t enforce any type of second factor authentication. Q: What is the difference between modern authentication and legacy authentication?Ī: Legacy authentication refers to protocols that use basic authentication. “Please note this change does not affect SMTP AUTH and we will continue to support Basic Authentication for it in Exchange Online at this time. With the large number of solutions, devices, and appliances that use SMTP for sending mail we are working on ways to further secure SMTP AUTH and will continue to update you as we make progress.” This means that new or existing applications using one or more of these API’s/protocols will not be able to use Basic Authentication when connecting to Office 365 mailboxes or endpoints and will need to update how they authenticate.” “Today, we are announcing that on October 13th, 2020 we will stop supporting and retire Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange Online. Microsoft announced back in 2018 that end of support was coming for Basic Authentication and we’ve been updated with an official date of Oct 13,2020. *NOTE* While we recommend this as a temporary fix, please take note that support for legacy auth is ending in October of this year:
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