WebMay 3, 2024 · The absolute best way to disable Basic Auth is to use Authentication Policies to block Basic Auth. As this article clearly states, if you want to block Basic Auth, use Auth Policies. Don’t use Set-CASMailbox or Conditional Access, as those are both post -authentication. They prevent access to the data, but they don’t stop authentication. WebBlocking access using Other clients also blocks Exchange Online PowerShell and Dynamics 365 using basic auth. Configuring a policy for Other clients blocks the entire organization from certain clients like SPConnect. This block happens because older clients authenticate in unexpected ways.

Block Microsoft 365 user accounts with PowerShell

WebNov 7, 2024 · Namely, Client Access Rules, or the functionality that allows us to control access to Exchange Online based on location, protocol and authentication type. Sadly I still don’t have CARs across all my tenants, but it’s enough to give the feature a quick test. Let’s go. First of all, managing of Client Access Rules is all done via PowerShell. WebOct 17, 2024 · The feature was named Disable Basic Authentication in Exchange Online using Authentication Policies and as the roadmap items stated ... and once a block is enabled, whether such traffic was blocked. In other words, we can’t really tell you how well the block is working. ... tickling every user using Exchange Online PowerShell (which … potholder with pocket

Basic Authentication and Exchange Online – February 2024 …

Web# Create Auth Policy to block basic authentication (Make sure this has all protocols listed) New-AuthenticationPolicy -Name "BlockBasicAuth" -BlockLegacyAuthAutodiscover … WebMar 30, 2024 · Click New Policy to start. Enter a name that indicates the goal of the policy. [Block Access] – Legacy Authentication. Click Users and groups and select All Users. If required you can exclude users or groups (I don’t recommend this). Don’t forget to click Done. Click Cloud apps or actions and select All cloud apps. tots wcostream