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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.
i don't know why but i just deleted some stuff that i had inbox and now they are showing in deleted items so very odd seems now working very odd
however if i delete stuff from junk mail they don't appear in deleted items folder strange
The Microsoft Support status for this issue at
has been updated from "Investigating" to "Resolved". I hope it was not premature, but at this time we have not had further authentication/login prompt errors using Windows Live Mail, Outlook 2013, Outlook 2016, Thunderbird, and the Samsung Email apps since early this morning when changes were evidently made by the Outlook team.
I see that Microsoft has marked this as resolved. I flushed my credentials out of the Credentials Manager and created a new App Password. After launching Outlook 2013 and getting prompted I entered the fresh App Password, which authenticated successfully. About 5 minutes later, Outlook is again prompting for a password and will not accept the new App Password.
Although the issue 'password prompts' is gone, I still get another error 'The TCP/IP connection was unexpectedly terminated by the server' time to time.
Hotmail > IMAP > Outlook 2010
Everywhere I look, whether on Outlook on the web, the Outlook app, or my email client, all folders are in sync including trash/deleted.
On page 22 of this thread I replied
"Using Outlook's webmail this is not an issue for me."
I am signed in using Outlook on the web and have no problem with missing deleted items. I don't use the native Outlook app for mobile devices, as I use a different client.
Sorry, but I believe it is unrelated to this thread which pertains specifically to authentication with e-mail clients.