My organization has started to test Office 365 Multi-Factor Authentication. We are federated with Office 365 using ADFS 2.0. I've noticed that after enabling MFA the Office iOS apps that take me to my companies ADFS login form no longer accept my AD credentials. They also don't accept App Passwords generated in Office 365. The App Passwords seem to work everywhere else: Outlook, ActiveSync, OWA iOS App, Outlook iOS App. Anyone else run into this? Examples of the iOS apps that don't work:  OneDrive for Business, OneNote, Word, Excel, PowerPoint.  When I try to use my AD credentials I get:  "There ws a problem acessing the site.  Try to browse to the site again.'  If I try my App Password I get: "The user name or password is incorrect."  If I disabled MFA for a user account.  These iOS apps work fine again.

Hi,

Thank you for your post.

This is the forum to discuss questions and feedback for Microsoft Office client. There is not so much about Office 365 server/deployment aspects here, I would suggest you to post in the dedicated forum of Office 365 Community, where you can get more experienced responses:

http://community.office365.com/en-us/f/default.aspx

The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding.

Regards,

Ethan Hua
TechNet Community Support