Using Outlook for Android in business environments for email and scheduling
I didn't get any helpful replies either. The only replies were "I'm having the same problem". But then someone posted they had finally succeeded so I tried again and this time I also succeeded. No rhyme or reason why, didn't do anything different but assume some update had fixed the problem, at least temporarily. Once authenticated, I was in and only needed it the once. Don't know if it would still work - haven't dared try! So maybe it's worth a few more random attempts every so often. Sorry I can't say anything more helpful!