Outlook and Teams Calendar Access Issues

Incident Report for Seton Hall University

Identified

Some users may intermittently experience issues accessing their calendars in Outlook on the web, the new Outlook desktop client and Microsoft Teams. Affected users may receive an error indicating that calendar events cannot be retrieved.

Microsoft has implemented a fix and expects it to take full effect by October 9. In the meantime, users experiencing the issue may try clearing their browser history and cache, then signing in again. Users may also access their calendars using the classic Outlook desktop client.

The Division of Information Technology is monitoring the situation and will provide updates as more information becomes available.

Posted Oct 07, 2026 - 16:52 EDT

This incident affects: Microsoft Office 365.