Forum Discussion

Christian Taveras's avatar
Christian Taveras
Iron Contributor
Oct 16, 2017

Multi-factor Authentication breaks outlook

Just wondering if anyone has run into this issue.     I have been Turning on MFA for users a group at a time all was going smooth.  The next morning after turning on MFA for the last hand full of u...
admin
exchange
office 365
security
Christian Taveras's avatar
Christian Taveras
Iron Contributor
Feb 05, 2019

Keep in mind APP Passwords by pass MFA.  Outlook, esp 2016 has built in Modern Auth so it should be able to Auth users against ADFS if domains are federated or Azure.  Using APP passwords in outlook for me is a no no, thats Just me.  I rather find the root cause of why Outlook is prompting and fix that.

Only thing using APP Passsword in my environment are mobile device Ipads, Iphones Android phones/Tablets.  Everything else is using ADFS.

pshears's avatar
pshears
Copper Contributor
Feb 25, 2019

Hi We have migrated to Office 365, with an Exchange 2013 hybrid server and Outlook 2013 clients. I would like to implement 2FA/MFA - but it breaks Outlook. We also don't currently have Azure Premium P1 licences, so can't implement Conditional access.

Reading the above messages, is that using Outlook 2013 we would have to use the APP password, but would not have to use the APP password if all the clients were using Outlook 2016? 

Would the hybrid server running exchange 2013 be an issue?