Most Microsoft Azure tenants that have existed for a while will have some users or clients connecting to Exchange using Basic authentication. The removal of Basic authentication also removes password that do not include MFA. Modern authentication also allows users and clients to send simple usernames and passwords, but it additionally allows other authentication steps such as multi-factor authentication (MFA) via Microsoft Authenticator.
On October 1, Microsoft will begin requiring Modern authentication for accounts connecting to Exchange Online. From an administrative standpoint, we’re most concerned with applications or services that are configured to use Basic authentication and that will experience a business impact when Microsoft disables Basic authentication. For end users, you’ll see applications such as Apple Mail or other third-party email clients. Typical Basic authentication can originate from several sources. What Is Basic Authentication?īasic authentication allows users and clients to send a simple username and password to Exchange Online for authentication. These exception changes should give some breathing room to those that are not able to proceed by October 1 st. There is guidance around how to avoid disruption by requesting a one-time extension. The update can be found here, Basic Authentication Deprecation in Exchange Online. (For more information, see the Microsoft article “ Deprecation of Basic authentication in Exchange Online”).Īs of September 2022, Microsoft has provided an update on guidance for the upcoming change to Basic authentication. Starting October 1, 2022, Microsoft will begin turning off Exchange Online Basic authentication. Microsoft is disabling Basic authentication in an effort to improve data security in Exchange Online.
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