Jan 22, 2026, 1:33 PM CST

Jan 22, 2026, 11:00 PM CST

Exchange Online
Microsoft 365 suite

Microsoft Defender XDR
Microsoft OneDrive
Microsoft Purview
SharePoint Online

Any users served through an affected section of service infrastructure in the North America region may be intermittently impacted. This could affect users located in Asia-Pacific, Europe, or Latin America.

Some of the impacted service functions include, but may not be limited to:
- Sending and receiving email through Exchange Online, including notification email from Microsoft Viva Engage as well as subscription email for Microsoft Fabric users. Users may be receiving a "451 4.3.2 temporary server issue" error message when attempting to send or receive email through Outlook.
- Collecting message traces in Exchange Online.
- Searching within SharePoint Online, Microsoft OneDrive, and/or Microsoft Teams.
- Accessing the service portals, including Microsoft Purview, Microsoft Defender XDR, and the Microsoft 365 admin center.
- Creating chats, meetings, teams, channels or adding members in Microsoft Teams. Additionally, some users may be intermittently unable to create breakout rooms or Microsoft Teams live events.
- Receiving presence or location information in Microsoft Teams.
- Existing or new meeting options for Facilitator in Teams may not be honored.
- Applying and managing sensitivity labels, interactive operations on reports, and artifacts with sensitivity labels in Microsoft Fabric.
- Print registration and printer jobs may fail in Universal Print.
- Microsoft ToDo users may experience synchronization issues, which can prevent tasks from updating across devices. Additionally, tasks created in Shared Lists may not appear for collaborators.
- Microsoft Defender for Cloud Apps users may be unable to view insights or view, create, or update OAuth enabled app policies. Reporting data may also appear blank, even though no error is shown.

A portion of dependent service infrastructure in the North America region isn't processing traffic as expected.

We’ve confirmed that the affected infrastructure has returned to a healthy state and is operating as expected. We’ll continue to closely monitor the remediation actions taken and make any necessary adjustments to maintain stability. If users experience any residual issues, clearing local DNS caches or temporarily lowering DNS TTL values may help ensure a quicker remediation.

Jan 22, 2026, 8:24 PM CST
We’re seeing continued improvements in service availability and functionality as a result of our load-balancing efforts. We’re actively monitoring performance and making targeted adjustments to further improve stability and availability, while continuing recovery actions to ensure a reliable service experience.

We've implemented a traffic balancing solution within a limited portion of infrastructure and telemetry shows success. We're applying this solution incrementally across all affected infrastructure to ensure the environment remains balanced as recovery continues. This quick update is designed to give the latest information on this issue.