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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.
The problem has not yet been resolved with the combination of Outlook 2013 and Hotmail.com. With the above combination, you cannot use a regular password and must use an app password
Outlook 2013 supports OAuth2 if you edit the registry:
I just tested it with my hotmail and Thunderbird and it worked for me.
I also had to change IMAP server to outlook.office365.com
Thunderbird published a solution, with switching from basic auth to OAuth2
(didn't try yet, I'm not @ home)
https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202
"New Outlook" has new terms and condition, and by using it, you agree to send and share all your emails and 3rd party account data with Microsoft. So think and read that before you opt to use it. "New Outlook" on Win11 is a PWA. For MS accounts, it probably doesn't matter, BUT if you access any non-MS accounts, it means MS cloud will be the middle man accessing your non-MS account data and refurnishing it to you on your screen. It's very very different than the Outlook desktop which is a local client. "New Outlook" is a cloud client.
I just wanted to say that I am having the same problem with hotmail accounts using IMAP and Outlook 2013 requesting passwords.
They had been all set up using the IMAP server outlook.office365.com and started having this issue mid-January.
During my troubleshooting, I changed a couple to use imap-mail.outlook.com as the IMAP server. Did not make a difference - and it doesn't seem to have any rhyme or reason to why some will ask for the passwords sometimes but other times work just fine.
I also just tried changing one of them to use the outlook.live.com IMAP server. No change.
I currently have 4 hotmail accounts using IMAP (and one gmail account using IMAP). All 4 of the hotmail accounts have this issue.
In addition, I have 4 hotmail accounts using POP. The hotmail account associated with this login uses POP, and I have occasionally had it request the same password sort of thing during this time. The other 3 POP accounts are working just fine at this time.
I will also add that if I just confirm the pop up windows asking for the passwords (which are already filled in with asterisks for the password), it will eventually connect, sometimes after 3-5 tries, and I am able to send and receive with them.
I would be happy to send along information if that is still needed for troubleshooting purposes. I am guessing it is not since the email address was removed for the contact.