Northwestern University incident

Office 365 (Email and Calendaring) Degraded Performance

Resolved after 1 hour 46 minutes, affecting Office 365 (Email and Calendaring), on July 23, 2026.

resolved Jul 23, 2026, 08:27 PM UTC

The vendor has confirmed that this incident is now resolved. We are closing this posting.

Started
Jul 23, 2026, 06:41 PM UTC
Resolved
Jul 23, 2026, 08:27 PM UTC
Duration
1h 46m
Detected by Pingoru
Jul 23, 2026, 06:41 PM UTC

Affected components

Office 365 (Email and Calendaring)

Update timeline

  1. identified Jul 23, 2026, 06:41 PM UTC

    The vendor has reported degraded performance across multiple Microsoft Office 365 services within North America. The vendor has implemented mitigations to assist with the recovery of services for a subset of users, and are working to restore service for more users as soon as possible. The next update will be provided by 14:30 CDT.

  2. monitoring Jul 23, 2026, 07:58 PM UTC

    The vendor has confirmed that they are seeing normal performance on Office 365 (Email and Calendaring). Northwestern Information Technology will continue to monitor performance and will post a final update by 15:30 CDT.

  3. resolved Jul 23, 2026, 08:27 PM UTC

    The vendor has confirmed that this incident is now resolved. We are closing this posting.

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