RESOLVED: Outlook Web & Desktop – Sending Issues & 500 Error (Vendor Issue)

Saturday, March 1st, 2025

Posted in General News, Incidents, Uncategorized

Incident Discovery Time: 03:25pm on 03/01/2025
Time of Resolution: 05:56pm on 03/01/2025
Services Impacted: Email & Calendaring, Microsoft 365 Outlook Web App

Description of Impact

Users were reporting issues with the Outlook Web App (OWA) and the desktop app.

  • – Web App: 500 error with a repeating redirect loop.
  • – Desktop App: Unable to send/receive emails.

    • This appeared to be a vendor-related issue with Microsoft. Reports started appearing on Downdetector around 3:25 PM EST, but Microsoft’s Health Status page didn’t acknowledge it at that time.

    Incident Description and Resolution

  • The issue appears to be resolved.
  • Outlook Web App is now accessible, and users can send emails from the desktop app again.

    • We will continue to monitor for any further disruptions, but at this time, no further action is needed.

    Additional Information

    The cause of this incident was determined to be a vendor issue.

    If you continue to have issues, please contact the IT Help Center.

    Previous Update

    Incident Discovery Time: 04:03pm on 03/01/2025

    Services Impacted: Email & Calendaring, Microsoft 365 Outlook Web App

    Description of Impact

    Users are reporting issues with the Outlook Web App (OWA) and the desktop app.

  • Web App: 500 error with a repeating redirect loop.
  • Desktop App: Unable to send emails.

    • This appears to be a vendor-related issue with Microsoft. Reports started appearing on Downdetector around 3:25 PM EST, but Microsoft’s Health Status page hasn’t acknowledged it yet.

    Current Status

    IS&T teams have been notified. This appears to be a vendor-related issue with Microsoft.

    Next Update: 06:00pm