Can't access a vNext mailbox if Azure multi-factor authentication is enabled in Office 365 Dedicated/ITAR


A user can't access a mailbox through their Outlook client in Microsoft Office 365 Dedicated/ITAR (vNext).


This issue may occur if the mailbox is set to enforce Azure multi-factor authentication but if all the requirements for this feature aren’t in the vNext tenant.


To fix the issue, disable Azure multi-factor authentication for the mailbox. For information about how to disable Azure Multi-factor authentication in the Office 365 admin center, see Set up multi-factor authentication for Office 365 users

More Information

For more information about multi-factor authentication, see Plan for multi-factor authentication for Office 365 deployments.

Article ID: 3187083 - Last Review: Aug 22, 2016 - Revision: 1