Office 365 (Email and Calendaring) Degraded Performance

Incident Report for Northwestern Information Technology

Resolved

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

Posted Jul 23, 2026 - 15:27 CDT

Monitoring

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.

Posted Jul 23, 2026 - 14:58 CDT

Identified

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.

Posted Jul 23, 2026 - 13:41 CDT

This incident affected: Communication and Collaboration (Office 365 (Email and Calendaring)).