Ongoing since 06:07 PM UTC, affecting Microsoft 365.
This looks to be as a result of a wider outage with Microsoft's services that has been given issue reference EX1550543. We'll continue to monitor.
Affected components
Microsoft 365
Update timeline
- investigating Nov 12, 2026, 06:07 PM UTC
We are observing Microsoft 365 calendar APIs returning higher error rates and investigating the impact. This may affect how quickly changes to calendars are observed and our ability to push events.
- monitoring Nov 12, 2026, 06:27 PM UTC
This looks to be as a result of a wider outage with Microsoft's services that has been given issue reference EX1550543. We'll continue to monitor.
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