Microsoft 365 users worldwide experienced a widespread Microsoft 365 outage on November 12, 2026. The disruption affected several services, including Outlook, Teams, OneDrive, SharePoint, and Microsoft 365 Copilot. Recovery efforts continued into November 13, with thousands of users still reporting problems.
What is Microsoft 365?
Microsoft 365 is a cloud-based productivity platform developed by Microsoft. It provides applications and services for communication, collaboration, document creation, and file storage. Some of the commonly used Microsoft 365 applications include:
- Outlook: Email and calendar management.
- Microsoft Teams: Chat, meetings, and collaboration.
- Word, Excel, and PowerPoint: Document, spreadsheet, and presentation creation.
- OneDrive: Cloud-based file storage and synchronization.
- SharePoint: Document management and team collaboration.
- OneNote: Digital note-taking.
- Microsoft To Do and Planner: Task and project management.
- Microsoft 365 Copilot: AI-powered assistance across Microsoft applications.
These services are used by individuals, businesses, educational institutions, and organizations worldwide.
Microsoft 365 Outage: Which Services Are Affected?
The outage initially affected users in the Americas before reports of problems emerged from other regions. Concurrently, Users reported difficulties signing in, sending and receiving emails, accessing files, joining Teams meetings, and loading Microsoft 365 applications. Microsoft confirmed disruptions across several services, including:
- Exchange Online and Outlook
- Microsoft Teams
- SharePoint Online
- Microsoft 365 Copilot
- Microsoft Defender XDR
- Microsoft Planner
- Microsoft To Do
- OneDrive
- OneNote
- Microsoft 365 for the web
Some related services and features, including Microsoft Graph API requests and Safe Links, also experienced issues. Concurrently, the impact varied by user and region. While some services started recovering, others continued to experience intermittent disruptions.
Microsoft 365 Outage covered in Admin center
Microsoft tracked the outage under incident MO1550821, along with related service incidents.
According to Microsoft’s updates, several servers unexpectedly became unavailable after failing automated health checks. This resulted in additional pressure on the remaining infrastructure. Some Microsoft initiated several recovery measures, included:
- Restarting affected servers to restore availability.
- Redirecting traffic through alternative routes.
- Temporarily pausing new changes to the affected infrastructure.
- Testing alternative health-check methods.
- Monitoring restored servers for stability under increased workloads.
Microsoft also reported some recovery in affected regions. However, certain servers that initially returned to service became unresponsive again under load. Users can check the Microsoft 365 admin center for service-specific updates and recovery information.
Are Personal Microsoft Accounts Also Affected?
Yes. The outage was not limited to business and enterprise customers. Users with personal Microsoft accounts reported Outlook down, and also reported problems accessing several services. According to Microsoft’s service communication, the issue affected the following consumer services:
- Outlook.com
- OneDrive
- OneNote
- Microsoft To Do
- Microsoft Teams
- Microsoft 365 for the web
Desktop and mobile applications may also experience issues when they depend on the affected cloud services.
What Should You Do If Microsoft 365 Is Not Working?
There is practically nothing you can do right now to fix this issue, including the Outlook down issue. Microsoft says the servers should be back up soon, which should resolve the problem.
Latest update from Microsoft
Here is the latest update from Microsoft regarding the Microsoft 365 Outage