Outlook 2016 doesn't accept password or app password

Early in this post (sorry, don't remember which page), there is a post about a new release from 9Folders that supposedly works around the problem. It's a new update to the app. I use 9Folders also, but haven't had a problem in days, and when I did, it was hit or miss, so I lived with it, waiting for a fix from MS. Still don't know if it is fixed, but no issues on my end for a while.

I do not know if it is fully fixed since there are sometimes hours without problems and sometimes only new password prompts and no authentification possible.

But you can try this:

Make sure that you have switched on two-factor authentication in the relevant account. If you already have, please also set up a new app password (if Nine does not support 2FA for microsoft accounts). Then try to newly set up your account (delete it first and then try a fresh set up).

Try to set it up as:

1. EAS with server outlook.office365.com
2. EWS with servers m.outlook.com and/or s.outlook.com

Try all this with both, WLAN enabled and disabled (so only mobile network)

It could be that this will fix your account since I guess that its not only a problem with their servers but also with some accounts or some account status on their servers.

BTW: For me since today morning all works fine with my account set up as EWS with 2FA on and App password. But I did not leave my WLAN for today, so it could be that I will still get errors later on. :-)

Edit: As I do not know Nine at all I do not know what this app/programm supports but after skimming the website, I think that at least one of the protocols mentioned above should be supported.

Well, our company let Microsoft fully manage it, so there you have it. Microsoft can't even manage their own stuff.

I work in high-tech... like really high-tech industry. NOT every company can afford to staff half-dozen support specialists or analysts just to baby-sit all of Microsoft's ill-advised approach to many things. Even our highly skilled IT people are getting sick of all the issues.

We live in a really sick world controlled by Microsoft now, even for someone like me that work in high-tech for almost 30 years and embraced every new thing. Every 2nd Tuesday of the month, we get the lovely Patch Tuesday nightmare from Microsoft. After 2-3 weeks of back and forth, the issue may get resolved and be only in time for the next round of Patch Tuesday nightmare. On top of that, we get the lovely monthly update to Office suite and the weekly updates to Edge. Overall, I find myself constantly dealing with Microsoft bugs and I am a developer so I can't image how non-tech people deal with these endless of issues. I don't know how we have time left to focus on real work.

Life used to have 2 certain things, tax and death. Now, it's tax, death and endless of Microsoft bugs.

Well my hopes after the newly marked resolved were unfounded.

This morning was a bad a s ever, with continuous prompts for both my accounts in office 2013.

Definitely NOT resolved

This is not resolved. App passwords still do not work with Outlook 2013