They f'd up 11 days since Microsoft f'd up
Broke 0.4 Vistas Fixed well documented Nov 22, 2021 their #59 worst broke on record

Another Monday, another everything-offline evening

November 2021 global outage knocked out Microsoft 365 and Azure sign-ins

↳ caused by Global authentication failure (November 2021)

The market's verdict: -1.9% on MSFT in the week after.

Status: Fixed. Working as intended, eventually.

What actually happened

On the evening of November 22, 2021, a worldwide login failure took out Microsoft 365, the Azure portal, Azure SQL, Dynamics and Xbox sign ins for hours, with Downdetector spikes across the US and Europe. It was the year's third big identity led everything outage, a genre Microsoft had by now thoroughly established. Configuration rollback, apology, goodnight. The status page is the hardest working employee at the company.

This one is well documented.

Links

↳ caused by Global authentication failure (November 2021)

Timeline

  • Nov 22, 2021 Fixed Microsoft shipped a fix.