Microsoft 365 Outage Disrupts Copilot and Search
π‘Microsoft 365 authentication failures can break Copilot, enterprise search, and AI workflows built on connected data.
β‘ 30-Second TL;DR
What Changed
The incident began with Exchange Online authentication and protocol connectivity failures on August 31.
Why It Matters
AI applications that rely on Microsoft 365 Copilot, enterprise search, calendars, presence, or connected files may return incomplete results or fail outright. Organizations using Microsoft 365 as an agent or retrieval data layer should expect degraded availability and potentially delayed workflows.
What To Do Next
Check the Microsoft 365 Admin Center Service Health dashboard and temporarily route Copilot or RAG workflows away from Microsoft 365 search and files until recovery is confirmed.
Key Points
- β’The incident began with Exchange Online authentication and protocol connectivity failures on August 31.
- β’The disruption expanded to SharePoint, OneDrive, Teams, and Microsoft 365 Copilot features that depend on Microsoft 365 data.
- β’Microsoft identified a core authentication configuration issue and deployed targeted mitigation across affected infrastructure.
- β’Exchange Online mail flow largely recovered, but search and other enterprise workflows remained degraded.
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Original source: Computerworld β
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