Microsoft Outlook Outage 2026: Is Outlook Down Today? Latest Microsoft 365 Update
Microsoft users experienced a major service disruption on November 12, 2026, affecting Outlook, Microsoft 365, Teams and other cloud-based services. Thousands of users reported problems accessing their email accounts, sending messages and using essential workplace applications.
The Microsoft outage also affected users in different regions, including the United States and Asia-Pacific. Businesses and organisations that depend on Microsoft 365 experienced interruptions to their daily operations.
As users continue searching for answers to questions such as "Is Outlook still down?", "When will Microsoft be back up?" and "What caused the Microsoft outage?", here is everything you need to know about the latest incident.
Is Microsoft Outlook Down Right Now?
Microsoft Outlook experienced widespread connectivity issues beginning on November 12, 2026.
As of November 13, Microsoft was still working to restore affected services. Its recovery efforts had shown some improvement, but the company had not confirmed full restoration.
Users may experience:
Difficulty opening Outlook email.
Problems signing in to Outlook accounts.
Delays in sending or receiving emails.
Outlook inboxes failing to load.
Connection errors on desktop and mobile applications.
Problems accessing Exchange Online mailboxes.
The impact may vary depending on the user's location and the Microsoft service being accessed.
What Happened to Microsoft on November 12, 2026?
The disruption initially affected Exchange Online, the cloud-based email service behind Microsoft Outlook.
Microsoft later confirmed that connectivity issues could affect multiple Microsoft 365 services across different regions.
Downdetector recorded more than 130,000 reports of Outlook problems in the United States around 1 p.m. Eastern Time on November 12.
The outage also affected businesses and government organisations. Reports of disruption continued into Asia-Pacific business hours on November 13.
Which Microsoft Services Were Affected?
The outage extended beyond Outlook and affected several Microsoft services.
1. Microsoft Outlook
Outlook users reported difficulty accessing mailboxes, loading inboxes and sending or receiving emails.
2. Microsoft Teams
Some users experienced connectivity problems and interruptions to features that depend on Exchange Online, including calendar and meeting-related functions.
3. Microsoft 365
Some Microsoft 365 features experienced connectivity and availability problems, affecting users who depend on Microsoft's productivity applications.
4. Microsoft Copilot
Microsoft 365 Copilot users could experience problems loading Copilot Chat or accessing workplace information such as emails, calendars and files.
5. SharePoint Online
Some SharePoint Online features experienced connectivity issues associated with the wider Microsoft 365 incident.
6. Microsoft Defender XDR
Some users experienced problems accessing Microsoft Defender portal pages and related security features.
The extent of the impact varied across services. Not every feature was necessarily unavailable to every user.
What Caused the Microsoft Outlook Outage?
Microsoft's investigation identified problems involving affected servers and infrastructure.
The company found that a large number of servers had become unexpectedly unavailable. This shifted additional workload onto the remaining infrastructure and contributed to connectivity errors.
Further investigation found that a process responsible for establishing secure connections on affected servers was becoming overwhelmed. This caused some servers to stop processing requests.
Microsoft also investigated a recent network configuration change that coincided with the start of the disruption.
The company began restarting affected servers, adjusting configurations and gradually restoring traffic to improve service availability.
Was Microsoft Hacked?
There is no confirmed evidence that a cyberattack caused this outage. Microsoft said it was not aware of malicious activity associated with the disruption.
Therefore, users should not assume that the Microsoft outage was caused by hackers.
Microsoft Outage Update: What Is the Company Doing to Fix It?
Microsoft has been working on several recovery measures:
Restarting affected servers.
Redistributing traffic across its infrastructure.
Testing alternative server health-check methods.
Limiting certain types of traffic in affected locations.
Rebuilding some servers using an earlier software configuration.
Monitoring server stability before restoring additional traffic.
Although some servers initially returned to service, Microsoft reported that certain servers became unresponsive again after receiving traffic.
As a result, the company continued testing recovery measures before expanding them more widely.
Is the Microsoft Outage Fixed Yet?
As of November 13, 2026, the outage had not been officially declared fully resolved in the latest service incident updates available for this article.
Microsoft was reporting positive results from restarting affected infrastructure and monitoring server performance. However, Outlook and other Microsoft 365 services could still experience degradation.
Users should check Microsoft's official service status information for the latest recovery updates.
How to Check Microsoft Outlook Outage Status
If Outlook is not working, you can check whether the problem is affecting other users.
1. Check Microsoft Service Status
Visit Microsoft's official service status website:
https://status.cloud.microsoft/
Check for updates related to Outlook, Exchange Online and Microsoft 365.
2. Check Downdetector
Visit:
https://downdetector.com/status/outlook/
Downdetector displays user-submitted reports about Outlook problems and service disruptions.
You can also check Microsoft's overall outage reports:
https://downdetector.com/status/microsoft-365/
3. Check Microsoft 365 Admin Center
Business and organisation administrators can check service incidents and updates in the Microsoft 365 admin center.
Look for these incident reference numbers:
EX1550543 – Exchange Online mailbox connectivity issues.
MO1550821 – Multiple Microsoft 365 service connectivity issues.
What Should You Do If Outlook Is Not Working?
If you are unable to access Outlook, try these steps:
Check your internet connection.
Refresh Outlook or reopen the application.
Try accessing Outlook through a web browser.
Check Microsoft's official service status page.
Avoid repeatedly changing your password if the problem is a wider service outage.
Wait for Microsoft's recovery updates if the issue is affecting its servers.
If Outlook continues to show errors after Microsoft confirms service restoration, contact your organisation's IT administrator or Microsoft Support.
How Long Will the Microsoft Outlook Outage Last?
There is no confirmed universal restoration time for the November 2026 outage.
The recovery process depends on Microsoft's ability to stabilise affected servers, restore infrastructure capacity and safely reintroduce traffic.
Users should follow official Microsoft updates rather than rely on estimated recovery times circulating on social media.
Frequently Asked Questions (FAQs)
1. Is Outlook down today?
Outlook experienced a widespread outage beginning November 12, 2026. Microsoft continued recovery efforts on November 13, with full restoration not yet confirmed in the latest updates available for this article.
2. Is Microsoft still down?
Some Microsoft 365 services were still reporting degradation during the November 13 recovery period. The impact may vary by service and location.
3. What happened to Microsoft Outlook?
Outlook experienced connectivity problems because of server and infrastructure issues affecting Exchange Online.
4. Why is Outlook not working?
Users may be unable to access Outlook because of mailbox connectivity problems, affected servers or service disruptions.
5. Was Microsoft hacked during the outage?
Microsoft said it was not aware of malicious activity causing the outage. No confirmed cyberattack has been linked to this incident.
6. When will Outlook be back up?
Microsoft has not provided a confirmed universal restoration time. Users should monitor the official service status page.
7. Is Microsoft Teams also down?
Some Teams features were affected by the wider Microsoft 365 disruption, particularly features that depend on Exchange Online.
8. Is Microsoft Copilot down?
Some Microsoft 365 Copilot features experienced connectivity issues during the outage.
9. How can I check if Outlook is down?
You can check Microsoft's service status page or Downdetector for current reports.
10. What is EX1550543?
EX1550543 is Microsoft's incident reference for Exchange Online mailbox connectivity problems associated with the November 2026 outage.
Conclusion
The Microsoft Outlook outage on November 12, 2026, disrupted email access and several Microsoft 365 services across multiple regions. Microsoft identified server availability and secure-connection processing problems and began working on infrastructure recovery.
Although recovery efforts showed signs of improvement on November 13, full restoration had not yet been confirmed in the latest updates available for this article.
Users should follow Microsoft's official service status page for reliable information about Outlook, Teams, Copilot and other Microsoft 365 services.