Microsoft Outage 2026: Why Outlook and Teams Went Down Worldwide
Explore the 2026 Microsoft outage, why Outlook and Teams went down worldwide, its impact, and key lessons for businesses.
November 13, 2026 – Microsoft 365 services suffered a global outage on November 12, disrupting Outlook, Teams, Copilot and business operations across multiple countries. Recovery efforts continued into November 13, with full restoration not yet confirmed.
TL;DR: Microsoft Outage 2026
- What happened? A global Microsoft outage disrupted Outlook, Teams, Exchange Online, Copilot and other Microsoft 365 services on November 12, 2026.
- What caused it? Microsoft identified unexpectedly unavailable servers and overloaded infrastructure, although the exact initial trigger remains unconfirmed.
- Who was affected? Businesses, government agencies, financial institutions and AI companies across multiple countries.
- Is Microsoft back online? Recovery is underway, but full restoration has not been confirmed in the reviewed updates. Users can check Microsoft’s official service status.
What Happened During the Global Microsoft Outage?
Microsoft experienced a widespread service disruption on Thursday, November 12, 2026, preventing users worldwide from accessing Outlook emails, Microsoft Teams and other Microsoft 365 applications.
According to Microsoft’s Exchange Online incident updates, the incident began around 16:17 UTC. Users reported difficulty accessing mailboxes, sending emails and using connected workplace applications.
As Reuters reported, outage monitoring platform Downdetector recorded approximately 138,000 Outlook-related reports in the United States near the peak of the disruption.
Reports also emerged across Europe and Asia-Pacific, with service problems continuing into Friday, November 13.
Why Did Microsoft Go Down Suddenly?
Microsoft attributed the disruption to infrastructure problems involving unexpectedly unavailable servers and elevated load on the remaining systems.
According to Microsoft’s official status updates, the increased load was not caused by a general rise in user traffic. Instead, servers going offline shifted existing traffic onto the infrastructure still operating.
Recovery became more difficult when some restarted servers stopped responding again after receiving traffic.
Microsoft investigated server availability, routing configurations and authentication-related issues while applying infrastructure fixes.
The company also said there was no indication of a cyberattack. However, the precise initial cause has not yet been confirmed, according to The Guardian’s outage coverage.
Which Microsoft Services Were Affected?
The outage affected several Microsoft 365 applications and connected features.
| Service | Reported disruption |
| Outlook | Email access and delivery problems |
| Exchange Online | Mailbox connectivity failures |
| Microsoft Teams | Calendar and collaboration-related issues |
| Microsoft Copilot | Errors involving connected Microsoft services |
| SharePoint and OneDrive | Certain file access and integration problems |
| Microsoft Intune and Defender | Selected management and security features |
Not every feature was unavailable for every customer. Microsoft said the extent of disruption varied across services and organizational accounts.
Global Impact: Governments, Businesses and AI Companies
The outage affected more than personal email accounts, interrupting operations across government agencies, financial firms and multinational businesses.
According to Reuters, government organizations in Australia, Japan and the United States experienced disruptions.
In Australia, the problems affected government communications and public services. Japanese government agencies also reported difficulties with information systems.
Financial institutions faced interruptions to email-based trading communications. Reuters reported that one Taiwanese financial firm used fax to confirm trades, while another cancelled a bond repurchase transaction.
Airlines, insurers and logistics businesses also reported communication difficulties, with some companies delaying financial announcements.
The outage reached the AI industry as well. Reuters’ initial outage report confirmed that OpenAI and Anthropic experienced problems with Microsoft 365 connectors.
These issues affected integrations between AI tools and Microsoft’s services, rather than establishing that ChatGPT or Claude were completely unavailable.
The disruption also raised questions about organizations’ reliance on a single cloud provider for essential business functions.
Microsoft Outage Recovery: Are Services Back Online?
Microsoft began restoring affected servers, redirecting traffic and applying configuration fixes to improve infrastructure stability.
As Reuters reported on November 13, the company observed signs of recovery but continued working to restore services across affected regions.
Microsoft subsequently reported improved server stability after applying an authentication and routing component patch.
However, recovery remained uneven across regions and customer accounts, and complete worldwide restoration was not confirmed in the reviewed updates.
Microsoft plans to publish a post-incident report detailing the root cause and preventive measures after the disruption is resolved.
How to Check If Microsoft Services Are Restored for You
Microsoft 365 services may recover at different times depending on your region, organization and account. Users can verify their service status through the following methods:
- Check Microsoft’s official status: Visit the Microsoft 365 Service Status page to review ongoing incidents and recovery information.
- Use the Microsoft 365 Admin Center: IT administrators can sign in at admin.microsoft.com and navigate to Health → Service health. Relevant incident references include EX1550543 and MO1550821.
- Test Outlook and Teams: Sign in to Outlook on the web, send and receive a test email, check your calendar and verify whether Teams features work normally.
- Follow Microsoft’s updates: Check @MSFT365Status on X for the latest service recovery announcements.
If your account continues experiencing errors, contact your organization’s IT administrator before changing application or network settings.
Microsoft’s recovery efforts are progressing, but users should confirm restoration through official service health information and successful testing of their own applications.
