Office 365 – Manage modern authentication for Exchange Online from the administration portal

As you know Microsoft has been recommending to turn off basic authentication protocols for some time now.

Well, until now you had to manage this by implementing an Azure AD Conditional Access policy or by implementing an authentication policies for Exchange Online.

Well, you can now manage basic authentication access for Exchange Online directly from the Office 365 administration portal.
Behind the scene this option uses Authentication policies (see

The main purpose of this new administration option is more for customers which did not have yet setup authentication policies.

To start managing it, logon to your Office 365 administration portal ( and access the Settings\Org Settings blade to get to the Modern Authentication option under the Service tab


There you can enable the modern authentication (which should be by default now) and manage which service(s) can continue to use basic authentication


Benoit Hamet
Benoit Hamet
Benoit is working on Microsoft collaborative technologies He has been awarded as MVP for more than 12 years Currently MVP on Office 365 after being awarded on SharePoint (2011-2012) and Windows client & server (2002-2007) Speaker at various Microsoft events (TechDays, TechNet seminars) and Quest Software He works on on-premises (Active Directory, RADIUS/NPS, Exchange, Skype for Business, SharePoint, SQL, Terminal Server, Windows client and Windows Server) or online (Azure, Intune, Office 365, Exchange Online, SharePoint Online, Skype for Business Online, Teams) technologies