A widespread Microsoft outage lasting nearly 18 hours disrupted essential digital services worldwide. The company says the incident was not caused by a cyberattack but stemmed from infrastructure and server-related problems that affected secure connections and service availability.
BY PC Bureau
November 13: Microsoft has begun restoring some of its services following a massive global outage that disrupted businesses, schools, government agencies and millions of users across at least 74 countries, bringing essential communication and workplace operations to a standstill.
The disruption, which began on Thursday, November 12, continued into Friday, affecting several widely used Microsoft products, including Outlook, Microsoft Teams, Copilot, Exchange Online, SharePoint and other Microsoft 365 services.
Users reported difficulties accessing their email accounts, sending and receiving messages, retrieving files and using essential workplace applications. The outage also affected organisations that rely on Microsoft’s cloud-based infrastructure for daily operations.
According to outage-monitoring platform Downdetector, reports of Outlook problems peaked at nearly 140,000 globally, highlighting the widespread impact of the disruption. The United States was among the hardest-hit markets, while users across Europe, Asia, Africa and other regions also reported problems.
Microsoft identifies server-related problems
Microsoft has ruled out a cyberattack, saying there was no indication that malicious activity was responsible for the disruption.
The company initially attributed the problem to elevated infrastructure load across multiple regions. Further investigation indicated that a number of servers had unexpectedly become unavailable, placing additional pressure on the remaining infrastructure and triggering widespread connectivity problems.
Microsoft also encountered difficulties during its recovery efforts, with some servers becoming unresponsive again after traffic was redirected to them.
The company acknowledged that its initial recovery measures were not producing the expected results and said engineering teams were exploring alternative solutions to restore stability.
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Partial recovery reported, but disruptions continue
In its latest update on Friday, Microsoft reported progress in restoring services across parts of the Asia-Pacific region.
The company said recovery measures had been completed across portions of the affected infrastructure, with traffic gradually returning and improvements being observed in key services, particularly mailbox access and delayed email processing.
However, Microsoft cautioned that some customers could continue experiencing intermittent connectivity problems.
The company also extended its email timeout window to 48 hours to help protect delayed messages while engineers work through accumulated delivery backlogs.
Recovery efforts are continuing across other affected regions, with Microsoft prioritising server stability, traffic redistribution and the restoration of normal service operations.
Businesses and government agencies affected
The outage exposed the widespread dependence of organisations on Microsoft’s cloud-based services.
Businesses experienced communication delays, while government agencies, educational institutions and other public services reported difficulties accessing essential systems.
Several companies also faced disruptions to internal communications and business operations, demonstrating how a failure in a major technology provider’s infrastructure can have consequences across multiple industries and countries.
BREAKING: Microsoft services are beginning to come back online after a massive global outage left millions of users without access for nearly 18 hours.
The disruption affected businesses, schools and government agencies in at least 74 countries, including the United States.
Major services impacted included Outlook email, Microsoft Teams and Copilot.
Microsoft says the outage was not caused by a cyberattack but by overwhelmed servers responsible for establishing secure connections, preventing them from processing requests.
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The incident has once again raised questions about the reliability of cloud-based services and the risks organisations face when critical operations depend heavily on a single technology provider.
Microsoft has apologised for the disruption and said its engineering teams are continuing to work towards a full and sustained recovery.
Although services are gradually returning, the company has yet to establish that all affected systems have returned to normal operations.
