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I have this problem - Outlook 2016 doesn't accept password or app password - and i think it is a growing World wide Microsoft problem :-(
See also here: https://www.reddit.com/r/Outlook/comments/19dx64p/outlook_2013_windows_10_suddenly_not_accepting/Outlook gives me this: (startede yesterday)
I have 2 PC's with HOTMAIL accounts in Outlook 2016 ...
They both have this error.
I do get mails ... but I can´t send mails. Yesterday it did work for 1-2 hours ... but right now the error is there all the time :-(
Please help me.
Thanks in advance
Pierre
Using classic Outlook for Windows in business environments
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Yeah I've just noticed that the problem is only on one of my computers - and they are both running the same version of Outlook with the same accounts: Microsoft® Outlook® for Microsoft 365 MSO (Version 2401 Build 16.0.17231.20084) 64-bit
I have a iPhone XR 14 Pro Max & an iPad Air Software version 12,5,7. Both of these devices were asking for passwords over & over & not accepting. I have deleted the exchange accounts & now neither of these devices will accept me adding back in the accounts. I pay for Microsoft 365 Family. Please help as this is debilitating.
That one is definitely coincidence, the stuff on that page is unrelated to this issue, it will go down again. I can stay up for a whole day but when I switch networks it will have an issue until I bounce the network connection a couple times.
Most likely non-app passwords will not work at all going forward, this seems to be related to them locking that down more. I'd get it working with an app password (may have to disconnect and reconnect your network several times to get it to take) then just leave it with that so when it is fixed, you're all set. In the meantime, bouncing the network 1 or 2 times has been fixing it for me. I'm using an app password on gmail for android connecting via activesync to outlook.com.
My outlook 365 on my two PCs (using exchange to outlook.com) has had no issue this whole time, with 2FA enabled that uses Oauth2 which has not had any issues.
Here the official response from MS dated Feb.2: https://support.microsoft.com/en-us/office/outlook-and-other-apps-are-unable-to-connect-to-outlook-com-f4202ebf-89c6-4a8a-bec3-3d60cf7deaef
STATUS: MITIGATING
The Outlook.com Team implemented service changes on January 31, 2024 to address the connection issues with unexpected authentication prompts. Although this addressed a lot of the issues we are still seeing reports of password prompts. The Outlook.com Team continues to address the issues as we work through the reports and feedback. We will continue to work this issue until the issue is resolved.
For Outlook 2013 and Outlook 2016, if you are still seeing authentication prompts, please ensure you've enabled two step verification and create an app password. Use the app password in place of your normal password when Outlook prompts for authentication. For more information, see Using app passwords with apps that don't support two-step verification.
Well, I can never connect to Hotmail on an Exchange Connection. Switching to IMAP/SMTP, I can only connect with a regular password, never with an app password as requested.
On Outlook.com, I can connect to the Exchanger Server, but with a regular password only, never with an App Password.
Switching between various options is very time-consuming. MS QC starts to look very similar to the end of the Ballmer's era. Last 2 months Windows updates started to be buggy, and now this, especially the time it takes to resolve... The MS link above displayed "STATUS: RESOLVED" yesterday!
I will stop making changes and wait for the problem to be resolved, not patched.