November 13, 2026 9:50 AM 3 min read

Microsoft Outage Hit More Than Outlook: Even Its Cybersecurity Defenses Were Affected

by Surbhi Jain Benzinga Staff Writer

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ShortMediumLongOverview Beyond email and productivity tools, Microsoft Corp. ‘s (NASDAQ:MSFT) latest outage disrupted several cybersecurity and data-protection functions.

An incident report maintained by the University of Pennsylvania’s IT department, drawing from Microsoft’s service incident disclosures, lists disruptions across Microsoft Defender for Office 365, Microsoft Defender XDR and Microsoft Purview.

The reported problems went beyond administrators being unable to access security dashboards.…