MSFT EXCHANGE HAS STOPPED WORKING, CAN;T RECEIVE OR SENT EMAILS USING OUTLOOK

Hi Karolyn,

To assist you with more accuracy, could you please provide some additional information?

1. Are you using a personal account (outlook.com, gmail, hotmail, etc) or a work account (onmicrosoft.com, your company.org)?
2. Does Outlook on the web send and receive normally?
3. What is the exact error? This could be a bounce (NDR) code such as 5.7.x or 5.4.x, a sign-in prompt, or “Disconnected”. Mail stuck in the Outbox points to a different cause than a bounce.
4. Are you unable to receive emails from all external senders, or only specific domains/senders?
5. Can you still receive internal emails from users within your organization?
6. Can you send emails normally to both internal and external recipients?
7. What does the message trace in the Exchange admin center show for a test message? Look at the status (Delivered, Pending, Failed, FilteredAsSpam) and whether it lands in Junk or Quarantine. For reference: Message trace in the new EAC in Exchange Online | Microsoft Learn
8. Which email service are you using? For example, Microsoft 365 Exchange Online, Outlook.com, or another mail provider.

To ensure I provide the most accurate assistance, I would appreciate any additional information you can share regarding your current situation. If possible, please include screenshots, as they can be very helpful in the investigation.

Thank you for your patience and understanding. Should you have any further questions, please feel free to comment in this post.

If the answer is helpful, please click 'Yes' and kindly upvote it.

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