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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.
So sorry. Yes Thunderbird. My mistake. What mobile ( Android) email client uses OAuth (other than perhaps Gmail)?
K-9 Mail.
I am using multiple accounts and Mailbird. This morning is the first time in a week that all accounts have synced correctly at the same time and have continued working for the past hour. That is a good sign. I hope this is resolved.
I use Samsung Email and it recognizes Microsoft accounts as Exchange Accounts. I'm not sure it specifically asks for OAuth, but the server settings are definitely not IMAP. In fact, it won't even let me add it as an IMAP account for about a year now.
Outlook for Android, of course, uses Exchange for Microsoft accounts, personal or otherwise. I do believe you can add Microsoft email accounts as OAuth in Gmail for Android, too.
Nine Email works, too, and Aqua Mail (pro version) I'm pretty sure does as well.
All seems to be working well now, has since this morning. Outlook 2013, Thunderbird, and Lineage OS Android 8.1 mail app are all working on the first try!
Mailbird is working for me so far today, too. But I'm not holding my breath until it lasts the entire day. I just checked Microsoft's official status page here Outlook and other apps are unable to connect to Outlook.com - Microsoft Support and there's nothing new, still says "investigating." So who knows??