The November 2026 Microsoft outage began on 12 November when Exchange Online failed, disrupting Outlook, Teams calendars and Copilot worldwide. Microsoft blame…
Mailboxes stop opening.
From first fault to all-clear.
Early line: elevated load.
19,650 reports a minute.
Reports are not people.
Anything needing a mailbox.
No sign of malicious activity.
Restarts kept failing.
Email support down; flights fine.
Prescriptions delayed.
Police take reports by phone.
Ministry email down.
Backups everywhere.
Connectors failed too.
Exposed by a later change.
Not traffic, not hackers.
Staged reboots.
Asia-Pacific recovers first.
Region by region.
Post-mortem promised.
Underlying issue addressed.
A different kind of failure.
Third-party update vs own network.
Keep a backup channel.
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