Carousel · 4:56 slidesNov 15, 2026

Why One Microsoft Config Change Froze Millions of Workdays

On Nov 12, a single authentication configuration update knocked out Outlook, Teams, Exchange, and Copilot across North America.

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Why One Microsoft Config Change Froze Millions of Workdays: One Auth Change Stalled Microsoft 365

All 6 slides

  1. Why One Microsoft Config Change Froze Millions of Workdays, slide 1: One Auth Change Stalled Microsoft 365
    1. One Auth Change Stalled Microsoft 365
  2. Why One Microsoft Config Change Froze Millions of Workdays, slide 2: Inside Service Health: status.cloud.microsoft
    2. Inside Service Health: status.cloud.microsoft
  3. Why One Microsoft Config Change Froze Millions of Workdays, slide 3: Four Core Workplace Apps Hit Simultaneously
    3. Four Core Workplace Apps Hit Simultaneously
  4. Why One Microsoft Config Change Froze Millions of Workdays, slide 4: Why Shared Identity Is Cloud's Blast Radius
    4. Why Shared Identity Is Cloud's Blast Radius
  5. Why One Microsoft Config Change Froze Millions of Workdays, slide 5: Inside the Rollback: Hours of Retry Storms
    5. Inside the Rollback: Hours of Retry Storms
  6. Why One Microsoft Config Change Froze Millions of Workdays, slide 6: Three Multi-Vendor Resilience Rules
    6. Three Multi-Vendor Resilience Rules

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