Microsoft Outlook, Teams and several Microsoft 365 services are experiencing widespread disruptions as the technology company struggles to restore affected systems. Initial recovery measures failed to deliver sustained improvements, although Microsoft has since reported signs of stabilisation.
A major Microsoft cloud outage that began on Thursday, November 12, 2026, continued into Friday, affecting businesses, government agencies and individual users across the world.
The disruption left many people unable to access Outlook mailboxes, send or receive emails, or use certain features of Microsoft Teams and Copilot.
Microsoft acknowledged that some recovery changes were not performing as expected, forcing engineers to pursue additional measures to stabilise its infrastructure.
According to Reuters’ coverage of the Microsoft outage, the disruption lasted more than 12 hours and affected organisations in several countries. Microsoft’s later updates indicated improving server stability, but a complete recovery had not yet been confirmed in those reports. Reuters+1
What Happened to Microsoft Outlook and Microsoft 365?
Problems began emerging on Thursday afternoon in the United States, when users reported being unable to access email accounts and other Microsoft cloud services.
The disruption initially centred on Exchange Online, Microsoft’s cloud-based email platform. As the incident developed, related Microsoft 365 features also experienced problems.
Users reported difficulties opening Outlook, accessing their inboxes and sending important messages. Some also encountered errors while using Teams, Copilot and other connected applications.
The problems were not confined to one country.
According to Al Jazeera’s November 13 outage report, outage reports emerged from 74 countries and territories during the disruption.
The widespread nature of the incident created challenges for organisations that depend on Microsoft’s cloud infrastructure for everyday communication. Al Jazeera+1
Microsoft Says Some Fixes Are Not Working as Expected
Microsoft’s engineers attempted several recovery measures, including restarting affected servers, changing traffic routes and adjusting infrastructure configurations.
However, some of those efforts failed to produce lasting improvements.
In one service update, Microsoft acknowledged that changes intended to improve availability were not taking effect as expected.
The company subsequently investigated alternative methods of increasing capacity and reducing pressure on unstable servers.
According to CIO’s report on Microsoft’s recovery difficulties, the outage also affected security-related functions and other Microsoft 365 services that depend on Exchange Online.
Microsoft later reported early signs of stabilisation and improvements in available capacity as recovery measures continued.
These developments suggested progress, but they did not establish that every affected service had returned to normal. CIO+2
Which Microsoft Services Were Affected?
The outage affected several Microsoft products, although not every function within those products was unavailable.
| Service | Reported disruption |
|---|---|
| Microsoft Outlook | Mailbox access problems and email delivery delays |
| Exchange Online | Connectivity failures affecting email services |
| Microsoft Teams | Calendar, scheduling and some Exchange-dependent features |
| Microsoft 365 Copilot | Problems loading chats or accessing workplace information |
| SharePoint Online | Some Exchange-dependent features affected |
| Microsoft 365 Admin Center | Difficulty loading certain administrative pages |
| Microsoft Defender | Disruption to some security-related functions |
Microsoft’s incident information indicated that core Teams messaging and online meetings remained largely functional, while certain calendar and scheduling features were affected.
Similarly, access to files stored directly in SharePoint Online remained functional even though some connected features experienced problems.
These distinctions matter because an outage affecting Microsoft 365 does not necessarily mean every application or feature is completely unavailable. Penn Mail Services
How Many Users Reported Problems?
The outage triggered a substantial increase in reports on Downdetector’s Outlook status page, which collects user-submitted reports of service problems.
Outlook reports
~130,000
Near the early peak
Countries and territories
74
With reported problems
Figures reported during the November 12–13 incident. Outage reports are not equivalent to unique affected users. AP News+1
The number of reported problems declined from the initial peak as Microsoft worked on restoring services.
However, falling report counts did not necessarily mean that all systems had recovered. Some users continued to experience intermittent connectivity problems and delayed email delivery. Yahoo Tech
What Caused the Microsoft Outlook Outage?
Microsoft’s investigation identified problems involving server availability, infrastructure health checks and processes responsible for handling secure connections.
Some servers stopped processing requests, leaving other infrastructure components under increased pressure.
As engineers attempted to restore those servers, they encountered further instability.
Microsoft investigated configuration changes and tested ways to reduce the volume of connections reaching affected infrastructure.
An incident report reproduced by the University of Pennsylvania’s computing services described an overwhelmed server process involved in establishing secure connections. It also noted that engineers were examining a recent network configuration change that correlated with the start of the incident. Penn Mail Services
Microsoft had not established a final root cause in the updates reviewed.
The company also said it had no indication that the outage resulted from malicious activity or a cyberattack. Reuters
Businesses and Government Agencies Face Disruption
The outage created problems for organisations that rely heavily on Microsoft services.
Email remains essential for customer support, financial transactions, internal communication and administrative operations.
When Outlook becomes unavailable, employees may be unable to respond to customers, exchange documents or receive important notifications.
Reuters reported disruptions involving government agencies in Australia, Japan and the United States. The outage also affected trading firms, corporate communications and airline customer support operations.
In Europe, Euronext experienced email communication problems, while shipping company Maersk warned customers about possible delays in email updates. Reuters
The incident illustrates the operational risks associated with relying on a single cloud platform for several critical business functions.
What Should Outlook Users Do During the Outage?
Users experiencing connectivity problems can take several practical steps while Microsoft completes its recovery work.
- Check official updates: Visit Microsoft’s official cloud service status page for public service information.
- Contact your IT administrator: Business users can ask administrators to check the Microsoft 365 service-health dashboard.
- Use alternative communication: Phone calls or other approved messaging services may help with urgent matters.
- Avoid repeated email submissions: Messages may be delayed rather than permanently lost, so repeated sending could create duplicates.
- Watch for suspicious messages: Avoid unofficial outage-fix downloads or unexpected account verification requests.
Microsoft also provides official instructions for checking Microsoft 365 service health through its documentation.
Users should avoid unnecessary changes to working account settings while a confirmed service-wide incident is being investigated.
When Will Microsoft Outlook and Teams Be Fully Restored?
Microsoft has reported improvements in some affected regions as engineers continue applying recovery measures.
However, the company had not announced a confirmed deadline for complete restoration in the latest incident reports reviewed.
Recovery may happen gradually, with some users regaining access before others.
Certain features may also recover independently, depending on which infrastructure components they use.
For the most accurate information, organisations should monitor Microsoft’s service-health updates rather than relying solely on third-party outage reports. Forbes Australia+1
Why This Outage Matters
The Microsoft outage highlights the importance of reliable cloud infrastructure in modern workplaces.
Businesses increasingly depend on connected services for communication, collaboration, customer management and security.
A technical problem affecting one major platform can therefore interrupt several business functions simultaneously.
For Microsoft, restoring stable service and explaining the technical cause will be important steps in addressing customer concerns.
For businesses, the incident provides another reason to maintain alternative communication channels and operational continuity plans.
Conclusion
Microsoft’s November 2026 outage disrupted Outlook, Teams, Copilot and other Microsoft 365 services across multiple countries.
Although engineers have reported improvements, the recovery process encountered setbacks that prolonged disruptions for users and businesses.
The incident demonstrates how infrastructure failures can affect essential digital services worldwide, even when the underlying problem originates within a relatively small part of a large cloud platform.
External Sources and References
The article includes external links naturally within its paragraphs. These are the principal references: