Microsoft Confirms Outlook Outage Affecting Users Worldwide
Microsoft said outages affecting Outlook, Teams and other Microsoft 365 services were tied to elevated infrastructure load, with more than 130,000 reports on Downdetector.
- On Thursday, November 12, 2026, a widespread Microsoft 365 outage disrupted Outlook, Teams, and Copilot for thousands of users globally. Downdetector recorded nearly 130,000 outage reports shortly after 1 p.m. ET.
- Microsoft determined servers were failing automated health checks, becoming "unexpectedly unavailable" and shifting load onto remaining infrastructure. The company explicitly denied malicious or cyber activity caused the disruption.
- The disruption impacted critical infrastructure in Montreal, where health-care institutions and universities reported service interruptions. Engineers worked to restore capacity by restarting affected servers and redistributing traffic across worldwide infrastructure.
- Despite recovery efforts throughout Thursday, some restored servers became unresponsive again when receiving user traffic. Microsoft continued monitoring performance while pledging to treat the incident with urgency.
- This incident follows a similar widespread Outlook disruption on August 31, 2026, attributed to a misconfiguration issue. Microsoft has not provided a definitive timeline for full restoration, raising questions about cloud resilience.
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Microsoft ruled this Friday that the global fall of its Outlook mail service is due to malicious action and claimed to have verified the first "positive results" in the recovery process, according to AFP. The US tech giant attributed the stoppage, which has been going on for several hours, to a "high load" in [...] The Microsoft entry discards a cyberattack while following Outlook's global fall: "We have no record of malicious activity" was firs…
Microsoft Outlook outage: perils of relying on big tech
“I hope this email finds you well.” It apparently has not. Filipinos woke up today to an outage of Microsoft cloud services including Microsoft Outlook, MS Teams, and Office 365, the premiere suite for the backbone of most global enterprises across different industries. It has been more than 12 hours since the outage and Microsoft has still not found a solution to the problem. The underlying cause of the outage was an elevated load that servers …
On Friday 13 November, a global outage in Outlook disrupted the daily lives of many companies. In Cherbourg, the secretaries of a laboratory had to find a solution.
Telegraph & Argus
Is Microsoft still down? Thousands report issues with Outlook and other apps
Microsoft users have reported issues with several apps including Outlook, Microsoft 365, and Teams.
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