Outlook for Mac stopped sync with Exchange, creating new account creds error where Webmail works

Wilfried Van Haeren 5 Reputation points
2024-03-19T14:12:45.5166667+00:00

A user called in that her Outlook for Mac stopped syncing at 9:20 am. Her iPhone and webmail work well. We removed the account in Outlook for Mac and tried to add a new (and only account). It failed with a credential error and an invalid user. It doesn't even show the MS password window.

Webmail/outlook.com works online as well as on the phone.

Creating an Apple Mail also works (although with cert errors).

Latest macOS, latest O365 Outlook (March 18, 2024)

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,371 questions
{count} votes

2 answers

Sort by: Most helpful
  1. Wilfried Van Haeren 5 Reputation points
    2024-03-21T15:47:07.8433333+00:00

    The switch to the new Outlook (eventually) worked. The day before, the same switch from legacy to new didn't show errors. I tried again, and everything is working. Thank you all for the supporting responses.

    0 comments No comments

  2. ChristyZhang-MSFT 24,491 Reputation points Microsoft Vendor
    2024-03-25T06:36:59.8233333+00:00

    Hi @Wilfried Van Haeren ,

    Thanks for your reply!

    As reminded by Alexis Haritian, I found this issue related to EX742767:

    User's image

    If you are the administrator of your organization, you can log in to admin center>heat to check it. Please wait patiently and i will post back if there're any updates.

    Thanks for your kindly understanding and support!


    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.


Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.