EAS Native Clients not working with Conditional Access and Intune.

Question

Hi ,

Thanks in Advance to read and response on this issue!
Intune is setup and working as expected. Configured Conditional access policy for native clients with active sync without modern authentication and device need to be Complaint.
But when user try to configure ActiveSync profile in IOS devices it is prompting for password all the time and not accepting the password.
If i select Morden Auth , it is working fine, but due to some reason i can't select morden auth.

Please suggest.
AM

Answer 1

Seems like you might have blocked Basic auth based on your experience, which is recommended. But without more details on your setup in both Exchange and Azure AD it is hard to assist you. I would start looking in the Azure AD Signin logs to see what happens when you try.
I would also double check that Exchange Online supports Modern Auth.

Get-OrganizationConfig | Format-Table Name,OAuth* -Auto