Microsoft 365 outage takes down Teams, Exchange Online, Outlook

Microsoft is investigating an ongoing outage impacting multiple Microsoft 365 services after customers have reported experiencing connection issues.

“We’re investigating issues impacting multiple Microsoft 365 services. We’ve identified a potential networking issue and are reviewing telemetry to determine the next troubleshooting steps,” the Microsoft 365 team said in a Twitter thread. “We’ve isolated the problem to networking configuration issues, and we’re analyzing the best mitigation strategy to address these without causing additional impact.”

According to Redmond, users across all regions currently being serviced by the impacted infrastructure may be unable to access the affected Microsoft 365 services.

The list of services impacted by this outage includes Microsoft Teams, Exchange Online, Outlook, SharePoint Online, OneDrive for Business, PowerBi, Microsoft 365 Admin Center, Microsoft Graph, Microsoft Intune, Microsoft Defender for Cloud Apps, and Microsoft Defender for Identity, as revealed in a service health notification.

“Starting at 07:05 UTC on 25 January 2023, customers may experience issues with networking connectivity, manifesting as network latency and/or timeouts when attempting to connect to Azure resources in Public Azure regions, as well as other Microsoft services including M365, PowerBI,” the update reads.

Update January 25, 04:39 EST: The Azure team says the root cause behind this outage was a recent Microsoft Wide Area Network update.

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