Microsoft delays disabling Basic Authentication for several Exchange Online protocols 'until further notice'.

Start using Modern Auth now for Exchange Online.Microsoft will announce the move again in the Windows Message Center seven days before the disabling begins and tenants will be alerted through the Service Health Dashboard notifications when Basic Auth is turned off. However, customers will be able to re-enable those protocols after October 1 until the end of the year. To keep Basic Auth for any protocols, users will be able to run the diagnostics during September and Microsoft will not disable it for those specific protocols, though it will be ended for the other protocols. Microsoft updated its plan with the extra three months re-enablement because 'we understand that email is a mission-critical service for many of our customers and turning off basic auth for many of them could potentially be very impactful,' the team wrote. There are also many customers aware of the deadline who simply haven't done the necessary work to avoid an outage.'

'Despite multiple blog posts, Message Center posts, interruptions of service, and coverage via tweets, videos, conference presentations and more, some customers are still unaware this change is coming. 'We recognize that unfortunately there are still many tenants unprepared for this change,' the Exchange Team wrote.

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