We are making some changes to improve the security of your tenant. We announced in 2019 we would be retiring Basic Authentication for legacy protocols and in early 2021 we announced we would begin to retire Basic Authentication for protocols not being used in tenants. You can always read the latest information about our plans to turn off Basic Authentication here.
Today we turned off Basic Authentication for the Exchange ActiveSync protocol in your tenant. Based on our telemetry, no-one is currently using Basic Authentication with that protocol in your tenant and so we expect there to be no impact to you.
We have previously communicated this change via Message Center: MC191153 on 9/20/19, MC204828 on 2/26/20, MC208814 on 4/6/2020 and MC23771 on 2/4/2021, and most recently in the Basic Authentication – Exchange ActiveSync Message Center post sent approximately 30 days ago.
How this will affect your organization
Users in your tenant will now be unable to access their Exchange Online mailbox using Basic Authentication and that specific protocol.
What you need to do to prepare
This is for your awareness only. You have the ability to re-enable specific protocols for the time being – read more here.
Learn more
- Exchange Online > Clients and mobile in Exchange Online > Deprecation of Basic authentication in Exchange Online
Message ID: MC364426
Published: 26 April 2022
Updated: 26 April 2022
Alex Lim
Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook
