365 enable security defaults12/25/2023 ![]() While the end results are similar, Security Defaults do not utilize Exchange Authentication Policies under the hood. We should clarify that Security Defaults are typically tailored for new customers or those who are new to managing their own security story. Security Defaults block all Legacy/Basic Authentication and enable Modern/Multi-Factor Authentication for all users. In an effort to provide basic level of security, Security Defaults are being rolled out to all newly created tenants. Security Defaults (for organizations without Azure AD Premium licenses) : If your tenant was created on or after October 22, 2019, it is possible that Security Defaults are already enabled in your tenant. Just be aware this switch affects all the Outlook for Windows clients in your entire tenant, so make sure you are clear on how it may affect your users. If you haven’t turned Modern Authentication on yet we certainly recommend it. Enabled by default for all new tenants since August 1, 2017, Modern Auth is the superior alternative for all users and applications connecting to Office 365. Basic Authentication : Hopefully by now we don’t need to expand upon the virtues of Modern Authentication. Otherwise, while the below isn’t an exhaustive list, we thought it would be a good idea to try to cover a few additional details here. The easiest answer for customers who aren’t using Basic Authentication, and don’t have a complicated auth story, is to enable Security Defaults. We realize there may be some confusion around different efforts Microsoft is making to provide more secure environments for our customers. You’ll want to look through your Azure AD Sign-in logs to get a good idea of which protocols clients are using before making any changes. For advanced customers that may already be utilizing Authentication Policies, changes within the UI will modify their existing default policy. ![]() This policy is visible only through PowerShell. For customers that have not created their own Authentication Policies in the past, modifying any of these selections in the new UI (POP3 in the example below) will automatically create the first new Authentication Policy. These new changes, rolling out to all tenants, align with our entry from the M365 Roadmap.īehind the scenes, these new Modern Auth UI options utilize Authentication Policies. While additional granularity is available through PowerShell, once Modern Authentication is enabled these new UI options will provide Administrators simpler controls to manage Basic Authentication access to common protocol combinations. ![]() Available from within the Admin Center under Settings > Org Settings > Modern Authentication (alternatively, search for “Modern Authentication” in portal Home page Search field), customers may now quickly designate the protocols in their tenant that no longer require Basic Authentication to be enabled. Today we are pleased to announce some new changes to Modern Authentication controls in the Microsoft 365 Admin Center, exposing simpler options for customers to manage both Modern and Basic Authentication requirements within their organizations. Update: The full timeline for retirement of Basic Authentication in Exchange Online is now published in Basic Authentication Deprecation in Exchange Online – September 2022 Update. ![]()
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