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Important Notice: Microsoft Outage

Published: Fri 13 Nov 2026 - 08:37

Microsoft Outage

Update 13.11.2026 13.23

TU Dublin continues to experience some disruption to email services as a result of the ongoing global Microsoft 365 service disruption.

We are seeing improvements in Outlook services, with some users now able to access their email. However, recovery remains ongoing, and users may continue to experience intermittent access issues and delays in sending or receiving emails.

Microsoft has extended its email timeout period to 48 hours to help protect delayed messages while services recover. This means emails may remain queued for delivery as Microsoft works to restore normal operations and clear the backlog.

Microsoft has not yet confirmed a timeframe for full service restoration. Email delivery delays may continue even after Outlook access has been restored.

Current Service Status

  • Outlook and Email: Services are gradually recovering, although some users may continue to experience access issues or delays in sending and receiving messages.
  • Calendar and Meetings: Outlook calendar functionality may remain affected, including the ability to schedule new meetings. Existing Microsoft Teams meetings should remain accessible.
  • Other Microsoft 365 Applications: Teams, OneDrive, SharePoint, Word, Excel and PowerPoint remain available at TU Dublin, although some features may experience minor disruption.

Recommended Actions

  • Urgent Communications: Use Microsoft Teams chat or calls for urgent internal communications while email services remain affected.
  • Critical Emails: Where possible, defer sending time-sensitive emails until services have stabilised, or use an alternative communication method.
  • IT Support: Staff and students requiring assistance should use the Technology Services Self Service Portal.
  • Phishing Awareness: Remain vigilant for suspicious emails, links and attachments as delayed messages begin to arrive.

Next Steps

Technology Services continues to monitor Microsoft's recovery progress and will provide further updates as information becomes available.

Please note: Restoration of Outlook access does not necessarily mean all delayed emails have been delivered. Additional time may be required for the email backlog to clear.

We apologise for the disruption and appreciate your patience and understanding.

TU Dublin Technology Services