Outlook 2016 doesn't accept password or app password

Ron,

I also thought Outlook 2016 supported modern auth but unfortunately that is only for M365. The Outlook Team had to go look at the code and confirm they only did the 2FA with App Password support for Outlook.com.

One way to confirm is to look at the Connection Status Dialog, Description of the Connection Status dialog (press Ctrl, then right click the Outlook icon in the system tray, click Connection Status). Even with the reg keys to enable ADAL and MSOAuth Outlook still connects with Authn=Clear for Basic. It should be Bearer or MSA for modern auth.

Stephen,

Just to double check, if you add your Outlook.com account with the iOS Mail App as Outlook.com are you still seeing the auth prompts? Has it gotten any better since the changes this weekend?

I suspect there are both Outlook.com and Exchange options because Outlook.com has some back-end differences to Exchange 2019 and M365. There are a couple others that posted in the thread that have iOS Mail App that I contacted and sharing info to the service team to investigate further. If you are still seeing auth prompts I might reach out through forum moderation if the service team needs more accounts to investigate with.

Gabriel- if I’m understanding your question correctly, when I add my Msoft Outlook credentials in the iOS “add another email account” as an Outlook.com account instead of a Msoft Exchange account, it is more stable - I don’t think I’ve ever gotten an incorrect password message, and I have full email, calendar, contacts across my iPad and W10 MExchange 365. Please let me know if your team would like to reach out directly.

Yes but if you're using an app password you aren't using modern authentication.

Can Gabriel or someone from Microsoft explain why the burden of figuring out these new protocols is the users' responsibility? It's your platform that doesn't provide non-365 accounts a valid, stable connection. I use Thunderbird 102 with an exchange connection and an app password. It was reliable and stable for countless years until four weeks ago, when it stopped working altogether. With the prematurely announced recent "fixes," it now works intermittently but with no logic/reason as to when or why. I pay for a Microsoft 365 Personal account for a legacy Hotmail address. I (and others like me) would very much appreciate some support.