Users may be experiencing issues with accessing email messages on the iOS native mail app Sunday 2nd February 2025 19:22:00


Issue ID: EX1021490 Affected services: Exchange Online Status: Service degradation Issue type: Advisory Start time: Mar 2, 2025, 7:14 PM EST

More info Users may be able to click "continue" when prompted and navigate back to re-entering their password to attempt to resolve impact. Additionally, some users may be able to bypass the prompt to sign-in by clicking "edit settings" and then entering into the app.

Scope of impact Any user serviced by the affected infrastructure may experience issues with accessing email messages on the iOS native mail app.

Current status Mar 3, 2025, 6:58 AM EST We've so far been unable to identify any Microsoft service updates which we believe are contributing towards impact. However, we've observed through analysis of telemetry that an accumulation of authentication token errors associated with a third-party application may be causing the issue. We're continuing our review of available diagnostic data to confirm the root cause. Next update by: Monday, March 3, 2025 at 9:00 AM EST

History of updates Mar 3, 2025, 4:54 AM EST We're progressing with our review of recent scheduled service updates and diagnostic monitoring to isolate the root cause, before we begin assessing potential mitigation options. Mar 3, 2025, 2:37 AM EST We're continuing to assess and analyze our service logs, as well as monitor the service health and check for any changes that were made recently to the service, to understand the root cause of impact. Mar 3, 2025, 12:55 AM EST The review of the failures and service logs is ongoing. We're continuing our analysis to help understand the root cause of impact. Mar 2, 2025, 10:56 PM EST We identified some failures present in our service logs and we're continuing to review these, along with additional support case details, to help identify the cause of impact and develop our next troubleshooting steps. Mar 2, 2025, 8:53 PM EST We're continuing to review our service logs, along with provided screenshots, to better understand the cause of impact. Mar 2, 2025, 7:49 PM EST We're reviewing our service logs to aid in understanding the cause of impact and to develop our next steps. Mar 2, 2025, 7:22 PM EST We're investigating a potential issue with Exchange Online and checking for impact to your organization. We'll provide an update within 30 minutes