Blog Post

Microsoft Entra Blog
3 MIN READ

Azure AD Conditional Access support for blocking legacy auth is in Public Preview!

Alex Simons (AZURE)'s avatar
Alex Simons (AZURE)
Icon for Microsoft rankMicrosoft
Sep 07, 2018
First published on CloudBlogs on Jun, 07 2018 Howdy folks, Today I'm excited to announce the Public Preview of Azure AD Conditional Access support for blocking legacy authentic...
Updated Jul 24, 2020
Version 9.0
Product Announcements
Alex Simons (AZURE)'s avatar
Icon for Microsoft rankMicrosoft
Joined May 01, 2017
View Profile
Microsoft Entra Blog
Stay informed on how to secure access for employees, customers, and non-human identities, from anywhere, to multicloud and on-premises resources, with comprehensive identity and network access solutions powered by AI.
Stephen Wilson's avatar
Stephen Wilson
Copper Contributor
Oct 10, 2018

Alex,

Thanks, this is great! One question: If not selecting ActiveSync clients in the policy, will legacy authentication via ActiveSync still be possible, and if so still subject to password spray attacks? If so is there then any way to disable legacy auth for ActiveSync but still allow modern auth over ActiveSync, such as how the newer iOS mail client supports.

Regards,

Stephen