Global Microsoft Outage Disrupts Critical Services Worldwide as 48-Hour Recovery Begins

OPA WIRE, Nov 13 (OPA) — A sweeping technical failure across Microsoft 365 services left millions of users worldwide without access to core productivity tools including Outlook, Teams, and Copilot. The disruption hit critical infrastructure globally, forcing police departments to suspend online crime reporting and prompting the National Pharmacy Association to warn of potential prescription delays. Healthcare systems also felt the strain, with National Health Service hospitals reporting canceled appointments, including C-sections, due to calendar system failures.

Microsoft confirmed that recovery actions are progressing in phases, with incremental improvements recorded in the Asia-Pacific region. Engineers noted that traffic is gradually being restored and key customer scenarios, such as mailbox access and delayed email processing, are showing signs of stabilization. To protect delayed messages, the company extended the email timeout window to 48 hours while queue and backlog processing continue across its global data centers.

Third-party platforms integrated with Microsoft ecosystems also experienced cascading failures. Anthropic reported that its Claude AI tool and Microsoft 365 connectors suffered authentication and tool execution errors, while OpenAI noted similar issues with its Microsoft integrations. DownDetector logged thousands of user complaints regarding authentication failures and broken tool connections on AI platforms relying on Microsoft infrastructure.

Microsoft officials stated that there is currently no evidence of malicious activity or a cyberattack associated with the incident. The company continues to deploy mitigation teams across affected regions to restore full service capacity, promising a comprehensive post-incident report detailing the root cause once recovery operations conclude.