Intelligence Alert

Situational update on global Microsoft 365 outage as of Friday (13 November)

Risk level: Medium Country: United States

As per reports, the updates on global Microsoft 365 outage as of Friday (13 November) are as follows:

• A widespread global outage affecting Microsoft 365, Outlook, Teams and other Microsoft applications has continued from Thursday (12 November) into Friday (13 November), disrupting business communications, email services and access to workplace applications across multiple regions. The disruption reportedly affected users in 74 countries and territories, according to Downdetector, with a sharp increase in user submitted complaints across the Americas, Europe, the Middle East, Asia and Africa.
• Microsoft initially reported connectivity issues affecting users in the Americas before confirming that Microsoft 365 services across multiple regions could be affected. The disruption primarily impacted services dependent on Exchange Online, including Outlook mailbox access and email delivery, Copilot Chat, SharePoint Online, Planner, To Do, Power BI, Fabric, Defender and certain Microsoft 365 administrative functions. Microsoft Teams’ core messaging and meeting functionality largely remained operational. However, calendar access, meeting scheduling and certain chat-related functions experienced disruptions.
• Downdetector reported disruptions across 74 countries and territories. However, the available reports specifically identify only the locations listed above. Additional countries across the Americas, Europe, the Middle East, Africa and Asia-Pacific remain to be individually identified and verified.
• At 1436 hours UTC, Microsoft reported improved availability across Outlook, Teams and other Microsoft 365 services, with email queues nearing normal levels. Some users could still experience intermittent access issues and delayed email delivery.
• At 1330 hours UTC, Microsoft reported broader recovery in North America and sustained improvements across much of Europe.
• At 1324 hours UTC, Microsoft reported that email delivery had improved across more of the affected infrastructure. The company retained an extended 48 hour delivery timeout while clearing the backlog.
• At 1158 hours UTC, reports cited a separate Claude incident as resolved. It had deployed a fix at 1105 hours UTC after reporting sign-in issues affecting claude.ai and Claude Code at 0958 hours UTC.
• At 1150 hours UTC, Microsoft reported completing recovery work on parts of its Asia Pacific infrastructure and gradually restoring traffic while extending recovery efforts to other regions.

Categories: Cyber Incident - Other

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