CSOM AuthenticationManager doesn't ask for sms-code or authenticator

Question

CSOM AuthenticationManager doesn't ask for sms-code or authenticator

Mats Jansson 1

I have implemented the authentication flow using AuthenticationManager in a Windows Forms app using CSOM. Works very good and supports MFA as it should, except for in one tenant (so far). In that tenant it starts the flow:

Opens the window and asks for username.
Switch to password window.
Blank window ( here it should ask for the sms-code sent to the mobile device).

Works in other tenants. Maybe some kind of policy that applies but I have tried to recreate the error with no luck. Any suggestions?

Marilee Turscak-MSFT 37,396 Reputation points Microsoft Employee Moderator

2021-01-08T23:01:25.827+00:00

Are you using the preview SMS-based user sign in feature in Azure AD?

Is it possible that the users or tenant could be missing some of the prerequisites mentioned in this article? ttps://learn.microsoft.com/en-us/azure/active-directory/authentication/howto-authentication-sms-signin
Mats Jansson 1 Reputation point

2021-01-09T08:11:27.163+00:00

Strange thing is that it is working from any browser with the same user. It just don't work from the app. I am using OfficeDevPnP.Core.AuthenticationManager()