microsoft 365 down: Why is Microsoft 365 not working and which services and apps are down? Outage affected regions, company latest status update explained
Why is Microsoft 365 not working and which services and apps are down?
Microsoft 365 services faced an outage on Thursday. Users reported issues with Outlook, Teams, Microsoft Store, Microsoft Defender, and Microsoft Purview. Many received ‘451 4.3.2 Temporary server error’ when trying to send or receive emails. Microsoft confirmed that the issue is being investigated.
Regions affected by Microsoft 365 outage
Microsoft 365 Thursday’s outage primarily affected users in North America, but there were reports from other regions as well. Microsoft identified some of its service infrastructure in North America as the main cause. Users in many countries have reported problems accessing Outlook, Teams, Microsoft Store, Microsoft Defender and Microsoft Purview. The outage caused delays in email delivery, failed logins, and temporary server errors. Microsoft is working to normalize and rebalance traffic in the affected regions.
List of affected areas:
- United States
- Canada
- Mexican
- United Kingdom
- Germany
- France
- Australia
- India
- Japan
- Brazil
Latest status update for Microsoft 365 outage
Microsoft has provided an updated status regarding the ongoing Microsoft 365 outage. The underlying cause has been fixed, but some Microsoft 365 apps and services still face ongoing impacts, the company said. Microsoft said teams continue to monitor the availability and functionality of all services. The update noted that service functionality has increased and mitigation actions are ongoing to restore full service. Microsoft also directed users to check the Microsoft 365 Admin Center and status dashboards for the latest details on recovery and remaining issues affecting apps such as Outlook, Teams, Defender, and Purview.
Microsoft 365 outage details
Microsoft said: “We are investigating a potential issue affecting multiple Microsoft 365 services, including Outlook, Microsoft Defender, and Microsoft Purview. More information can be found in the admin center under MO1221364.”
At the time of this writing, more than 11,000 people were experiencing issues with Outlook. Overall, more than 14,000 users reported issues with Microsoft 365. Downdetector has tracked the complaints and most users are not receiving messages.
Microsoft 365 outage reason
Microsoft found that part of its service infrastructure in North America was not handling traffic correctly. The company said it was working to repair infrastructure and rebalance traffic.
The statement reads: “We have identified a portion of the service infrastructure in North America that is not handling traffic as expected. We are working to restore the infrastructure to a healthy state to perform a recovery. More information is available at https://status.cloud.microsoft.”
or under MO1221364 if accessible.”
Affected Microsoft 365 services and apps
The outage affected multiple Microsoft services, including:
- Microsoft Outlook
- Microsoft Teams
- Microsoft Store
- Microsoft Defender
- Microsoft Scope
- Microsoft Azure
User reactions
Many users shared their complaints online. One wrote: “I can’t do any other work because I can’t receive my 2-factor authentication email.” Another said: “451 4.3.2 Temporary server error. Please try ATTR2 again later.”
Users have also reported issues on social media platforms like X, saying emails are lagging and services are slow or inaccessible.
Temporary fixes for users
‘451 4.3.2 Temporary server error’ indicates server side problems. Users are advised to wait and try again later. IT administrators can check server health, DNS, diagnostics, and connectors. Microsoft said that the problem is on its side and that users cannot solve the problem alone.
Microsoft response and status updates
Microsoft confirmed that the infrastructure had been restored to a “healthy state” but required further load balancing. Traffic is being rerouted as engineers implement fixes. While some services, such as Azure, are gradually returning, Teams and Store still experience occasional issues.
Future updates
Microsoft has not provided a specific Estimated Time to Resolution (ETR). Users can check the Microsoft 365 Admin Center for service status updates. Partial service restoration may occur before full resolution.
FAQ
Q1: How long will Microsoft 365 be down after this outage?
The company did not give a specific period. Updates will be released to the Microsoft 365 Admin Center as engineers continue to restore services.
Q2: Which regions were affected by the Microsoft 365 outage?
The outage mainly affected North America, including the US, Canada and Mexico, but users in the UK, Germany, France, Australia, India, Japan and Brazil also reported issues.
