Microsoft 365 Service Disruption Update
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Based on the latest information from Microsoft, service availability is improving and approaching normal levels. However, Microsoft has not yet confirmed full restoration.
Microsoft systems are still working through a backlog of email messages requiring processing. As a result, users may continue to experience:
- Delayed email delivery: Messages may take longer than usual to arrive. Delayed messages should generally be retried automatically by the system.
- Out-of-sequence delivery: Emails may not be delivered in the order in which they were originally sent.
- Email delivery failures: Users may receive delivery failure notifications and may need to resend messages if delivery was unsuccessful.
IT Services will continue to monitor the situation and provide updates as more information becomes available. Users can also refer to Microsoft's Service Health Status page for additional information.
Previous Description (November 12, 2026 17:08):
Users may be unable to connect to multiple Microsoft 365 services.
Potentially impacted services include:
- Exchange Online
- Microsoft Teams
- SharePoint Online
- Microsoft Copilot 365
- Microsoft Defender XDR
- Microsoft Planner
- Microsoft To Do
- Microsoft Intune
- Microsoft Defender for Office 365
- Microsoft Purview
- Power BI
Microsoft is actively working to mitigate the issue and restore services.
IT Services will continue to monitor the situation and provide updates as more information becomes available. Users can also refer to Microsoft's Service Health Status page, https://status.cloud.microsoft/m365, for additional information and status updates.
Previous Description (November 12, 2026 15:38):
Users may experience difficulties connecting to or accessing the following Microsoft 365 services:
- Outlook and Exchange Online (email)
- Microsoft Teams
- SharePoint Online and OneDrive
- Microsoft 365 Copilot
- Microsoft Defender
Microsoft is actively working to mitigate the issue and restore services.
IT Services will continue to monitor the situation and provide updates as more information becomes available.
- Publish Date: November 13, 2026 10:11
- Channels:
- Lists/Email Addresses:
- ITADMIN-L
- ITS Distribution List
- This is an Update: View original notification
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IT Support Centre
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- Off Campus: 613.533.6666
- Online Help Form