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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.
Don't forget this thread too.
Outlook 2013 will not retain password for my hotmail account - Microsoft Community
I am using Mailbird and I can no longer authenticate my outlook email address. I contacted Mailbird and they stated they have been getting constant calls of outlook authentication issues and that it is a Microsoft issue.
Outlook 2019 is having the same problem. The Mail app on iPhone still works for my account.
I was just about to report the same thing. I'm using Outlook 2019 and the problems have been going on for three days now. I'm constantly being asked to enter my user data umpteen times in a row.
I have now excluded the account from automatic mail collection for the time being.
Having same problem from 2 days ago, Outlook 2016. password or app password both not working. This happens across all my 5 desktop computers all with up to date WIn10.
(Fortunately hotmail still works on cellphone and web platforms, or this would be a much bigger problem. Forwarding to gmail works and it is my temporary solution but feel it is becoming permanant)