Also For MFA to be effective, you also need to block legacy authentication. Currently, there are better and more effective modern user authentication alternatives such as OAuth 2.0 token-based authorization. Its threats have only increased since Microsoft originally announced they would disable it. Why?īasic authentication is an outdated authentication protocol. But now there is no escaping anymore and Microsoft will effectively begin on Octoto turn off basic authentication for exchange online in all Microsoft 365 tenants regardless of usage, except for SMTP authentication. In the event you need this protocol to facilitate your migration, please follow the steps provided by Microsoft in the following article to make this request.īasic Authentication Deprecation in Exchange Online – September 2022 UpdateĪdditional information for the depreciation of Basic Authentication can be found within the following article.Microsoft has long announced that it is going to block legacy authentication, due to corona and other reasons, this announcement has been delayed. Through a request to Microsoft, M365 Tenants will be allowed to re-enable the Basic Authentication protocol once between October 1, 2022, and December 31, 2022. If you are using or plan to use DeploymentPro in conjunction with a MigrationWiz project and Modern Authentication please follow these steps in this KB article: Installing DeploymentPro with MFA or 2-Factor Authentication Enabled. Be aware your migration may stall or fail for mailbox, archive mailbox or public folder projects if your authentication method is not addressed. If you have a project where the Microsoft Exchange Online Source or Destination is not set up to use Modern Authentication, please follow these steps outlined under Enabling Modern Authentication in this KB article: Authentication Methods.

Microsoft is deprecating Basic Authentication effective October 1, 2022.

Exchange online modern authentication