Forum Discussion
Multi-factor Authentication breaks outlook
If you have MFA enabled, you should use an Outlook version that supports Modern authentication. 2013 SP1+ should do, but Modern auth must also be enabled client-side and server-side:
We have been using office 2013 pro plus with the ADAL Reg keys in place. This setup has been in place for months. Then out of the blue after we forced a password change this issue occured.
MS says they are having issues with Outlook and ADAL ATM but there is nothing on the Portal in ref to this. I dont think OUtlook version is the issue here as this was all working fine for months until last Wednesday.
Well, the least they can do is push this info to the SHD, so make sure you give them some grief :)
Well i found in testing something is absolute being cache as to what that is i don't know. I also don't know if i want to spend anymore time on this than i have. I took 2 users turned on MFA, broke outlook and i then wiped the Windows Profile and that seemed to fix the issue for me. I don't think I should have to go to such extreme to have the end user recreate the windows and then the mail profile.
Have you checked Credentials manager in Control Panel? Are users given the option to save their password when prompted by Outlook to authenticate?
Agreed, turns out that turning on MFA for these 41 users breaks outlook. MS confirmed the issue on MS side. THey are suppose to be updating our tenant but Im still waiting. I was told that this issue is affecting other tenants in o365.
