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REDMOND, Wash. - Microsoft is working to return servers back online following a widespread outage Thursday that affected Outlook and Microsoft 365 services.
Users experienced major disruptions, unable to connect to Outlook and multiple other Microsoft applications. The company has investigated the issue, though an exact time for full restoration remains unclear.
Here's what we know about when Microsoft Outlook service will be restored:
Microsoft Outlook restoration timeline
Timeline:
The outage began around 9:45 a.m. (PT) Thursday morning, when Microsoft acknowledged users had been experiencing issues accessing Exchange Online mailboxes, which included Outlook and multiple other services.
By 10:07 a.m., Microsoft confirmed the outage could impact Microsoft 365 connectivity for users in any region.
In a 4 p.m. update on the Service Health Status page, Microsoft reported that some servers had returned to service and initially appeared healthy, but they stopped responding again once they began receiving traffic.
Engineers are analyzing diagnostic data from the servers to identify what is causing the system failures.
As capacity returns, Microsoft said users may see a gradual recovery as their devices and apps reconnect to the service.
Microsoft outage impacts
What we know:
Along with Outlook, Microsoft also listed several other services possibly affected by the outage:
- Microsoft Teams
- Microsoft Copilot 365
- Microsoft Defender XDR
- Microsoft Planner
- Microsoft To Do
- Microsoft Intune
Microsoft Outlook down: Widespread outage hits users nationwide
Microsoft users across the country reported connection issues in their Outlook mailboxes Thursday morning. Here's what we know.
What's next:
Microsoft will continue providing updates on the Microsoft 365 Status account on X. The next update is expected by 5:30 p.m. PT.
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The Source: Information in this story came from Microsoft.