Outlook email keeps prompting for a password, and then not accept it. Blocked out of emails.

Anonymous
2025-01-23T06:50:57+00:00

Why does my Outlook email keep asking for a password, and then not accept it. This started today with a pop up window, and now after several restarts and password entries my Outlook will not open at all, so I cannot copy and paste the error message. Something seems to have changed since earlier in the day. I am using Outlook (not new, in Microsoft 365).

Outlook | Windows | Classic Outlook for Windows | For business

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  1. Anonymous
    2025-04-15T18:34:47+00:00
    1. .msn
    2. Personal use
    3. Microsoft® Outlook® for Microsoft 365 MSO (Version 2503 Build 16.0.18623.20178) 32-bit
    4. I don't know the POP or IMAP configuration

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  2. Anonymous
    2025-04-03T22:47:09+00:00

    Have you tried looking for the "EnableADAL" value at the key HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\Identity in the registry editor? If it exists, you should set its data to "1".

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  3. Anonymous
    2025-04-03T22:28:09+00:00

    Why does my Outlook email keep asking for a password, and then not accept it. This started 3 weeks ago with a pop up window, and now after several restarts and password entries my Outlook will not open at all, so I cannot copy and paste the error message. in the day. I am using Outlook (not new, in 365.

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  4. Anonymous
    2025-03-30T20:37:41+00:00

    I spoke too soon. The "Send NTLMv2 response only" policy no longer works. I'm back at the same state with Exchange Server and Outlook. However, I noticed the Exchange servers started to issue NETLOGON event 5719 the time of the failure indicating they cannot communicate with a domain controller. Once this event is logged, DCOM events are also logged related to contacting the other Exchange servers. Restarting the NETLOGON service does not fix the issue as the event is continued to be raised. Microsoft has acknowledged there is some issue with Windows Server 2025 domain controllers in another case I have open, but the workaround they provided me for that case does not work here (resetting the computer machine password with reset-computermachinepassword).

    This is a real annoyance!!!

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  5. Anonymous
    2025-03-30T20:37:22+00:00

    You might want to create a new thread and ask that question again, as that support specialist was asking the original poster for that information.

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