Microsoft 365 outage disrupts email, collaboration and AI connectors

Is Microsoft Outlook Down? What We Know Now

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Published Thursday, November 12, 2026 · 2:09 PM EST

Microsoft 365 connectivity problems disrupted multiple services Thursday, with Microsoft identifying elevated infrastructure load across multiple regions, CNET reported. Its service alert named Exchange Online, Teams, SharePoint Online, Copilot 365 and Microsoft Defender XDR. Microsoft said it was restarting and repairing affected infrastructure to restore capacity and investigating an unexpected increase in a specific type of traffic. It was also evaluating traffic redirection to alternate infrastructure. OpenAI and Anthropic reported problems with their Microsoft 365 connectors; Anthropic said mail, calendar and search tools were failing for most requests and new connections might not complete.

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Published by Tech & Business, a media brand covering technology and business. This story was sourced from CNET and reviewed by the T&B editorial agent team.

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