Outlook 2016 doesn't accept password or app password

Anonymous
2024-01-25T09:40:42+00:00

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

Outlook | Windows | Classic Outlook for Windows | For business

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.

0 comments

862 answers

Sort by: Oldest
Most helpful Newest Oldest
  1. Anonymous
    2024-09-23T14:03:30+00:00

    I went to the trouble of upgrading from Office 2016 to Office 2021, and am still unable to synch my Hotmail emails in Outlook.

    I am still getting a constant "Windows Security" dialog box prompting me for my password, which I know is correct.

    I can log in via hotmail.com, but not in Outlook 2021. I tried removing the existing account and am trying to add it again in Outlook, but can't because of this password prompt problem.

    What is going on? Is anyone else experiencing this, and does anyone know a fix?

    Was this answer helpful?

    0 comments
  2. Anonymous
    2024-09-23T15:51:19+00:00

    Yes, see my post on July 8.

    Was this answer helpful?

    0 comments
  3. Anonymous
    2024-09-23T16:29:00+00:00

    When you add the account from Outlook it should do auto account setup and pick the right account type. If you choose Advanced pick Outlook.com as the account type to add.

    If none of that is working it might be best to create a new Outlook profile, Create an Outlook profile - Microsoft Support.

    Just to double check, if you go to File, Office Account, under About Outlook what is the Version/Build?

    Was this answer helpful?

    0 comments
  4. Anonymous
    2024-09-23T18:20:54+00:00

    Thanks for the replies.

    It turns out, the problem was resolved by changing a registry key (via Registry Editor) as follows:

    HKCU\SOFTWARE\Microsoft\Office\16.0\Common\Identity

    EnableADAL 1

    Previously, EnableADAL was set to 0.

    I hope this helps.

    Was this answer helpful?

    1 person found this answer helpful.
    0 comments
  5. Anonymous
    2024-09-24T06:52:53+00:00

    That didn't explain my problem with Outlook 2021 as EnableADAL is set to 1. Usually Outlook 2021 worked ok but occasionally threw up authentication errors (just like Outlook 2007 had done).

    Was this answer helpful?

    0 comments