M365 Service Health Notification

Microsoft 365 suite service alert Incident information Title: Some users may be unable to connect to Microsoft 365 services ID: MO214054 Status Service Restored Details Title: Some users may be unable to connect to Microsoft 365 services User Impact: Users may have been unable to connect to Microsoft 365 services. More info: For SharePoint Online, the impact was limited to new user sign in. Existing user sessions were not impacted by this event. Most Microsoft 365 commercial services were not affected by this issue, and the problem predominantly affected Microsoft 365 consumer services. Final status: After rolling back the change we've confirmed that impact has been mitigated. Scope of impact: Any user attempting to authenticate or login may have been unable to access Microsoft 365 services, though our analysis suggests that most users were able to access Microsoft 365 services such as Exchange Online and SharePoint Online as expected. Start time: Friday, May 22, 2020, at 7:48 PM UTC End time: Friday, May 22, 2020, at 8:12 PM UTC Root cause: A recent update impacted user authentication and login for multiple Microsoft 365 services. Next steps: - We're reviewing our update testing procedures to better understand why the offending change resulted in impact so that we can prevent similar issue from happening in the future. We'll publish a post-incident report within five business days. Thank you, The Microsoft team To customize what's included in this email, who gets it, or to unsubscribe, set your Service health preferences. If you are receiving this email because your Admin added you as a recipient, please contact your Admin to unsubscribe. Microsoft respects your privacy. Review our online Privacy Statement. Microsoft Corporation One Microsoft Way Redmond, WA USA 98052