Microsoft experienced a major service outage affecting 19 of its products, including Outlook, Microsoft Teams, and Copilot. The disruption began with users in the Americas unable to access their Exchange Online mailboxes and later spread to other regions and services. Microsoft is actively working to restore services by restarting servers, diverting traffic, and increasing computing capacity.
- Outage affected 19 Microsoft services including email, Teams, and security apps.
- Cause: Several servers became unexpectedly unavailable, straining remaining infrastructure.
- Microsoft is restarting servers, shifting traffic, and scaling virtual machines to restore services.
- Partial recovery observed, but sustained recovery is still in progress.
- Users may experience delays and intermittent issues until full restoration.
What caused the Microsoft service outage?
The outage was caused by several Microsoft servers unexpectedly becoming unavailable. This reduced the overall capacity and put extra pressure on the remaining servers. Microsoft stated that the elevated load was not due to increased user traffic but because of the loss of server availability. Additionally, an overwhelmed core process on the affected servers contributed to capacity loss.
How is Microsoft working to restore services?
Microsoft is taking multiple steps to fix the problem. These include restarting the affected servers, diverting network traffic to other parts of its global infrastructure, and increasing computing capacity by scaling up virtual machines. The company is also forcing synchronization of recent network changes on machines stuck in a bad state. Despite these efforts, some servers became unresponsive again after being restored, so Microsoft is reviewing additional actions to improve infrastructure stability.
Which Microsoft services were affected by the outage?
The outage impacted a wide range of Microsoft 365 services and applications, including:
- Exchange Online: Users faced mailbox access issues and email delays.
- Microsoft 365 Admin Center: Administrators had trouble loading certain pages.
- Microsoft 365 Apps and Admin Center: Problems viewing files and managing cloud policies.
- Microsoft 365 Education: Disruptions in assignments and progress tracking.
- Microsoft 365 Copilot: Access and response issues in Copilot Chat.
- Microsoft Defender for Office 365 and Defender XDR: Security feature failures and portal access issues.
- Microsoft Fabric: Errors exporting reports and opening protected files.
- Microsoft Graph: Timeouts affecting emails, calendars, and contacts.
- Microsoft Intune: Device enrollment and compliance operations affected.
- Microsoft Planner and Purview: Problems managing tasks and data protection features.
- Microsoft Teams: Core features mostly functional, but calendar and meeting scheduling affected.
- Microsoft To Do: Loading errors and app failures.
- Power BI: Intermittent issues exporting reports with security labels.
- SharePoint Online: Some features affected, but file access remained functional.
- Universal Print: Errors submitting print jobs and accessing admin features.
- Windows 365: Connection issues for some customers using Microsoft Purview Customer Key.
What can users expect while Microsoft restores services?
Microsoft has reported partial recovery in some regions but noted that sustained recovery is still a work in progress. Users may experience gradual improvement as capacity is restored and applications reconnect. However, intermittent disruptions and delays may continue until full stability is achieved.
