Microsoft Outage Today (November 13, 2026): Outlook, Teams and Microsoft 365 Status
A major Microsoft outage disrupted Outlook email and several Microsoft 365 services on November 12–13, 2026. Businesses, government organizations, and individual users reported problems accessing mailboxes, sending and receiving email, and using features connected to Microsoft’s cloud productivity platform.
Microsoft began investigating the disruption on Thursday, November 12, and continued recovery efforts into Friday, November 13. The company reported improving infrastructure stability and progress restoring email services, although some users continued experiencing intermittent access problems and delayed messages during the recovery period.
This article explains what happened, which services were affected, how to check the current Microsoft outage status, and what businesses should do while services recover.
Incident date: November 12–13, 2026.
Editorial status: Recovery was progressing in the latest reviewed reports; full restoration was not independently confirmed.
Official status: Microsoft Service Health.
Is Microsoft Still Down Today?
Microsoft’s November 13 updates indicated that recovery work was improving service availability. However, users in some regions could still encounter errors or delayed email delivery.
Because outage conditions can change rapidly, a static article cannot provide a reliable minute-by-minute answer to whether Microsoft is currently down.
The most dependable approach is to check Microsoft’s official service health dashboard and, for business accounts, the Microsoft 365 admin center.
Organizations should also check their own service health notifications because different Microsoft 365 tenants and regions may experience different symptoms.
A service returning to normal for one user does not necessarily mean every affected mailbox or application has recovered.
What Happened During the Microsoft Outage?
On November 12, Microsoft began investigating reports of users being unable to connect to Exchange Online mailboxes through multiple connection methods.
The problem initially drew attention from users in the Americas, but Microsoft subsequently acknowledged that users in other regions could also be affected.
As the incident developed, Microsoft identified wider impacts across services that interact with Exchange Online and related infrastructure.
The disruption affected the ability of some users to open mailboxes, send messages, receive email, and access connected Microsoft 365 features.
Microsoft worked to restore affected servers, redistribute traffic, adjust connection handling, and increase available infrastructure capacity.
Recovery progressed unevenly, with some components returning to service before others.
Which Microsoft Services Were Affected?
The outage centered on Exchange Online and affected several related services and features.
| Microsoft service | Reported impact |
|---|---|
| Outlook | Mailbox access, sending, receiving, and connectivity issues |
| Exchange Online | Connection errors and delayed email operations |
| Microsoft Teams | Selected calendar, meeting, and connected features |
| SharePoint Online | Some Exchange-dependent integrations and features |
| Microsoft Copilot | Selected responses and integrations relying on affected services |
| Microsoft Defender | Selected security management and email protection workflows |
| Other Microsoft 365 features | Additional dependent workflows experienced intermittent failures |
Not every feature of every listed service was unavailable. For example, certain Teams chat and calling functions remained operational while Exchange-dependent capabilities experienced problems.
It is important to distinguish a service-wide failure from the failure of specific features or integrations.
Microsoft Outage Incident Numbers
Microsoft used two important incident references during the disruption.
EX1550543 — Exchange Online
This incident tracked problems accessing Exchange Online mailboxes and related email functionality.
Exchange Online is the cloud email platform used by many Microsoft 365 business customers.
When Exchange Online becomes unavailable, users may experience errors in Outlook desktop, Outlook on the web, mobile mail clients, and third-party applications connected to their mailboxes.
MO1550821 — Wider Microsoft 365 Impact
This incident covered additional Microsoft 365 services and features affected by the broader infrastructure problem.
IT administrators can search these references in the Microsoft 365 admin center’s Service health section when the information is available to their tenant.
These incident numbers help distinguish the November 2026 disruption from unrelated Microsoft service issues.
Microsoft Outage Timeline: November 12–13, 2026
The following timeline summarizes major developments reported by Microsoft and established news organizations. Times are approximate and may differ between reporting sources.
| Date | Development |
|---|---|
| November 12, morning U.S. Eastern | Microsoft began investigating Exchange Online mailbox connectivity failures. |
| November 12, early afternoon | Reports increased significantly as users encountered Outlook and Microsoft 365 problems. |
| November 12, afternoon | Microsoft identified unexpected server unavailability and pressure on remaining infrastructure. |
| November 12, evening | Recovery measures included server restarts, traffic redistribution, and alternative routing. |
| November 13, early morning | Microsoft continued capacity and stability improvements while some services remained degraded. |
| November 13, later updates | Microsoft reported improving availability and reduced email queues, while some intermittent problems remained. |
For the current incident status, visit Microsoft’s official service health page.
How Many People Were Affected?
The disruption attracted widespread attention across businesses and government organizations.
According to Associated Press reporting, Downdetector recorded nearly 130,000 Outlook problem reports shortly after 1 p.m. Eastern on November 12.
However, Downdetector reports are not a count of unique affected users. One person may submit multiple reports, and many affected users never submit a report.
The number therefore illustrates the scale of reported disruption rather than the total number of customers affected.
Microsoft has not provided a verified final global count of affected users in the information reviewed for this article.
Were Government Agencies and Businesses Affected?
Yes. News reports described disruption involving businesses and government operations in multiple countries.
For organizations that depend on Microsoft 365, even a temporary interruption can affect customer communication, scheduling, internal coordination, and access to important documents.
Some government departments directed urgent inquiries to alternative communication channels while email services were unreliable.
The outage demonstrates how widely used cloud platforms can become critical infrastructure for everyday operations.
What Caused the Microsoft Outage?
Microsoft’s investigation identified infrastructure components that became unavailable and a process responsible for establishing secure connections that was becoming overwhelmed.
As affected servers stopped processing requests, remaining infrastructure experienced additional pressure.
Microsoft explored traffic-routing adjustments, server restarts, patches, and capacity improvements to restore stability.
However, these observations do not necessarily establish the complete underlying root cause.
Microsoft indicated that a post-incident report would provide more detailed findings after mitigation.
For an explanation of the investigation, see our Microsoft outage cause analysis.
Was the Microsoft Outage a Cyberattack?
There was no confirmed evidence that a cyberattack caused the November 2026 disruption in the information reviewed.
Microsoft stated that it was not aware of malicious activity causing the incident.
It is important not to confuse a major outage with a confirmed security breach.
Cloud platforms can experience disruptions because of software defects, infrastructure failures, configuration issues, capacity problems, or other operational causes.
Organizations should still remain alert to phishing attempts that exploit public confusion during major outages.
How to Check Microsoft Outage Status
- Open Microsoft Service Health.
- Check whether Microsoft 365 business or consumer services are degraded.
- If you are an administrator, sign in to the Microsoft 365 admin center.
- Open the Service Health dashboard.
- Review incident references EX1550543 and MO1550821.
- Check the most recent update and any estimated recovery information Microsoft provides.
Third-party services such as Downdetector can help identify widespread user reports, but they do not replace Microsoft’s official incident notices.
What Should Outlook Users Do?
If Outlook is not working during a confirmed service outage, repeatedly reinstalling the application is unlikely to resolve a problem occurring on Microsoft’s infrastructure.
Instead, confirm the service status and check whether the same issue appears across different devices or connection methods.
If email is urgent, use an approved alternative communication channel such as a phone call or another established business messaging system.
Avoid making unnecessary account or DNS configuration changes during a known cloud outage.
For local troubleshooting after service restoration, read our Outlook not working troubleshooting guide.
What Should Businesses Do During a Microsoft 365 Outage?
Businesses should activate their established incident response and continuity procedures.
Identify which workflows are unavailable, communicate the situation to employees, and provide approved alternative methods for urgent customer contact.
IT teams should document the impact, monitor official service health updates, and avoid changes that could complicate recovery.
Organizations handling sensitive information should continue enforcing data protection requirements even when normal collaboration tools are unavailable.
A major outage is not a reason to send confidential information through unapproved personal accounts.
Can Hardware Prevent Microsoft Cloud Outages?
No local device can guarantee the availability of a remote cloud service.
However, appropriate hardware can support business continuity.
For example, an uninterruptible power supply can protect local equipment against power interruptions, while backup storage and reliable networking equipment can support certain local workflows.
These products address local resilience, not the restoration of Microsoft’s remote infrastructure.
Explore technology hardware at AztekComputers, and read our business continuity planning guide.
Frequently Asked Questions
Is Microsoft down today?
Microsoft experienced a major outage on November 12–13, 2026. Recovery was progressing in the latest reviewed reports. Check Microsoft’s live service health dashboard for current conditions.
Is Outlook still down?
Some users continued reporting intermittent issues during recovery. Availability can vary by region and account.
What Microsoft services were affected?
Exchange Online, Outlook, and selected features of Teams, SharePoint, Copilot, Defender, and other Microsoft 365 services were affected.
What caused the Microsoft outage?
Microsoft identified overwhelmed connection-handling processes and server availability problems, but the complete root cause was still under investigation.
Was Microsoft hacked?
Microsoft reported no indication that malicious activity caused the incident.
When will Microsoft be fixed?
A universal restoration time was not confirmed in the reviewed reports. Consult official service health updates.
What is EX1550543?
It is the Microsoft incident reference associated with Exchange Online connectivity problems.
Where can I check Microsoft service status?
Visit status.cloud.microsoft or the Microsoft 365 admin center’s Service health dashboard.
Final Thoughts
The November 2026 Microsoft outage demonstrates the operational importance of Outlook, Exchange Online, and Microsoft 365 to organizations around the world.
Recovery efforts have been progressing, but businesses should rely on official incident updates rather than assuming all services are restored simultaneously.
The most effective response combines accurate information, clear communication, careful troubleshooting, and practical business continuity planning.
For more technology news and IT guidance, visit the AztekComputers Blog.
