Users of Microsoft services across several regions reported widespread difficulties accessing Outlook and other enterprise tools.
According to the outage-tracking platform Downdetector, more than 39,000 individuals in the United States alone logged issues regarding access.
The disruption expanded across 74 countries and territories on November 12, affecting applications including Outlook, Teams, Copilot, and OneDrive.
The incident specifically affected Exchange Online mailboxes, raising concerns for businesses and institutions relying on work-related communications.
Microsoft confirmed it was aware of the service disruptions and had launched an investigation to resolve the issue.
The company also provided an incident reference number to allow system administrators to track technical updates.
Source: Downdetector
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