Seton Hall University incident
Outlook and Teams Calendar Access Issues
Resolved after 2 days, affecting Microsoft Office 365, on October 7, 2026.
Microsoft has implemented a fix for the calendar access issues affecting Outlook on the web, the new Outlook desktop client and Microsoft Teams. The fix has been deployed and is being propagated to all users. Users who continue to experience issues may try clearing their browser history and cache, then signing in again. If the issue persists, please contact the Technology Service Desk.
Affected components
Update timeline
- identified Oct 07, 2026, 08:52 PM UTC
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.
- resolved Oct 09, 2026, 09:17 PM UTC
Microsoft has implemented a fix for the calendar access issues affecting Outlook on the web, the new Outlook desktop client and Microsoft Teams. The fix has been deployed and is being propagated to all users. Users who continue to experience issues may try clearing their browser history and cache, then signing in again. If the issue persists, please contact the Technology Service Desk.
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