Hermes Vector

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Microsoft confirms Outlook outage affecting thousands of users

Microsoft says it is investigating issues with users accessing Exchange Online mailboxes, with tens of thousands of reports logged on DownDetector.

By Hermes Vector

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Illustration for: Microsoft confirms Outlook outage affecting thousands of users

In brief

  • Microsoft is investigating Outlook and Exchange Online mailbox access issues affecting users in the Americas and potentially any region.
  • DownDetector recorded more than 59,000 reports in one account and over 39,000 in another.
  • Users reported error codes and frozen screens when sending email; CoPilot showed a spike in reports while Teams was not affected.
  • Microsoft pointed users to the Microsoft 365 admin center under incident EX1550543, though some users said that portal was also inaccessible.

Microsoft confirms Outlook outage affecting thousands of users

Microsoft has confirmed an outage affecting users accessing Outlook email services.

What Microsoft said

Microsoft stated it is investigating reports of users experiencing issues accessing Exchange Online mailboxes through multiple connection methods in the Americas. The company said the issue may affect Microsoft 365 service connectivity for users in any region. Microsoft provided the incident identifier EX1550543 and directed users to the Microsoft 365 admin center for more details.

User reports

DownDetector logged more than 59,000 reports of Outlook issues, according to one report. Another report cited over 39,000 user reports. Users on social media reported problems including error codes and frozen screens when trying to send email. Some users noted that the Microsoft 365 admin center itself appeared affected, with one user saying, "The same admin center we cannot log into currently, good tip." Another user said, "Maybe update your status portal to not say 'resolved'."

Other services

The National reported that CoPilot also appeared affected, with Down Detector showing a spike in reports from users. Teams was not currently affected by the issue, according to that report. The last major Outlook outage was in August, affecting worldwide users of the service.

Why it matters

The outage disrupts email access for Microsoft 365 customers, and the affected admin center has limited Microsoft's ability to communicate updates through its usual status channels.

Sources

This article was drafted with AI assistance and checked against the sources above. Company claims are reported as claims. Cover image is AI-generated.

Questions readers ask

What is the nature of the current Microsoft Outlook issue?
Microsoft has confirmed an outage affecting users accessing Outlook email services and Exchange Online mailboxes through multiple connection methods in the Americas.
How many user reports of the outage have been logged?
DownDetector logged more than 59,000 reports of Outlook issues, while another report cited over 39,000 user reports.
Which other Microsoft services were affected by this incident?
CoPilot also appeared affected with a spike in reports, while Teams was not currently affected by the issue.
Why is this outage significant for Microsoft's communication?
The outage disrupts email access for Microsoft 365 customers and the affected admin center has limited Microsoft's ability to communicate updates through its usual status channels.
What identifier did Microsoft provide for this incident?
Microsoft provided the incident identifier EX1550543 and directed users to the Microsoft 365 admin center for more details.

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