PennO365 Service Degradation

Incident Report for Wharton Computing

Resolved

Microsoft resolved the issue at around 1:30am eastern and PennO365 is functioning normally.

All email sent during the outage was queued and delivered.

The root cause of the issue was identified as lack of capacity due to maintenance on a portion of their infrastructure.

Posted Jan 23, 2026 - 09:11 EST

Identified

Microsoft has identified the issue and stabilized the infrastructure. Services are returning to normal, but it will take some time for full functionality to be restored. You may start to see delayed email being delivered.

Posted Jan 22, 2026 - 16:42 EST

Investigating

PennO365 services are currently in a degraded state. You may encounter slowness or tools not loading.

Microsoft is working on the issue, and you can follow along on their status page: https://status.cloud.microsoft

We will update this page with relevant information as it becomes available.

Posted Jan 22, 2026 - 15:44 EST

This incident affected: PennO365 (PennO365 (Faculty/Staff Email), Office Online, OneDrive).