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Categories: Exchange Online

September 1, 2022

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Basic Authentication Deprecation in Exchange Online – September 2022 Update

Exchange Online, SharePoint Development Services

From Microsoft Corporation
Technical Bulletin MC424233 · Published Sep 1, 2022

Message Summary

Message Summary 

One month from today, we’re going to start to turn off basic authentication for specific protocols in Exchange Online. 

Timeline and Scope 

As we communicated last year in blog posts and earlier this year in MC375736 , we will start to turn off basic authentication in our worldwide multi-tenant service on October 1, 2022. We will randomly select tenants, send 7-day warning Message Center posts, post Service Health Dashboard notices, and turn off basic auth in the tenant. 

We’re turning off basic auth for the following protocols: MAPI, RPC, Offline Address Book (OAB), Exchange Web Services (EWS), POP, IMAP, Exchange ActiveSync (EAS) and Remote PowerShell. 

We are not changing any settings or turning off SMTP AUTH. 

What If You Are Not Ready for This Change? 

We recognize many tenants may still be unprepared for this change. 

Today we announced an update to our plan to offer customers who are unaware or otherwise not ready for this change. You can read this announcement here

What should I do to prepare for this change? 

Any client (user app, script, integration, etc.) using basic auth for an affected protocol will be unable to connect. The app will receive an HTTP 401 error: bad username or password. Any app using modern auth for these protocols will be unaffected. 

If you are unsure if you have clients or apps that will be affected by this change, you can check the Azure AD Sign-In logs, or just check Message Center for any messages titled, ‘Basic Authentication – Monthly Usage Report’. We will send the usage report for August in the next few days. If you cannot see any of these messages, we have not detected basic authentication on the affected protocols in your tenant. 

To read more on what can be done to switch apps from basic to modern auth please view our main documentation page and our latest blog

Additional Information 

TECHNICAL BULLETIN END

QuixTec provides this and other technical bulletins unaltered from Microsoft. As an authorized Microsoft Partner, we ensure that all our solutions we deliver to you include the latest Microsoft updates.

ABOUT US: QuixTec, LLC is a U.S. certified Veteran Owned, modern DevOps organization with experience in a plethora of IT Software Languages.  As a Microsoft Partner, we specialize in Discounted Microsoft Software Licensing, Microsoft SharePoint, Microsoft365 and HTML5 technologies for small to enterprise-sized organizations. Our dedication to IT excellence is evidenced through our PECB ISO Certification training center. The only PECB ISO authorized center in Washington State. QuixTec, implements and provides training for upcoming open-source digital marketing services that are taking the industry by storm. This solution, used by over 100,000 businesses, provides enterprise level marketing capabilities at startup rates. The founder, Richard, has 30 years of experience working with several notable companies that include World Vision, Expedia, Microsoft, Levi Strauss, NASA, Boeing Aerospace, Los Alamos National Laboratory, and the U.S. Air Force, to name a few.  QuixTec is in the Seattle area. Phone today for a free consultation and project estimate.

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