Microsoft first announced the deprecation of Basic Authentication in September 2019 with the intention of starting the retirement process in October 2020. Those plans were subsequently postponed and needless to say it's been a long journey for many organizations to prepare for the inevitable. Sadly though, it seems not everyone received the memo and there are many organizations that still use basic auth extensively. Our old friend, Greg Taylor has been examining the telemetry and shared some interesting insights with us. We talk more about this change, what it means for you and how you can prepare for it (if you haven't already!) The clock is ticking..

Greg Taylor is a Principal Product Manager at Microsoft and is focused on Exchange Online protocols and security in Microsoft 365. Greg spent many years as part of the Exchange Engineering and Customer Experience teams, designing and building Exchange features, working with large enterprise customers, presenting at public events and working with technology communities. Greg also ran the Microsoft Certified Master (MCM) and Architect (MCA) and Exchange Ranger Programs for Microsoft, an elite 3-6 week in-person Redmond based program, training Microsoft and partner consultants and engineers how to design and troubleshoot the world’s largest and most complex Exchange deployments. You can find Greg on Twitter (https://twitter.com/gregtaylor_msft)

Not sure if and how this affects you and your organization or interested to know more? Check out: Deprecation of Basic authentication in Exchange Online(https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/deprecation-of-basic-authentication-exchange-online)