GoKawiilMicrosoft Outlook hit by widespread outage affecting Americas users
Microsoft Outlook suffered a major outage, with over 103,000 user reports on Downdetector, starting around 12:20 PM ET. Microsoft confirmed via its status account that it is investigating problems with Exchange Online mailbox access across multiple connection methods in the Americas, tracked under incident EX1550543.
GoKawiil's interpretation of the reporting above, not reported fact.
The disruption also hit Teams, SharePoint Online, Copilot 365, and Defender XDR, suggesting a shared infrastructure problem rather than an isolated Outlook bug. Microsoft says it is rerouting traffic away from affected systems, which indicates the fix involves addressing underlying network or server load issues rather than a simple software patch.
- Over 103,000 Downdetector reports flagged Outlook issues starting around 12:20 PM ET
- Microsoft confirmed Exchange Online mailbox access problems in the Americas under incident EX1550543
- Teams, SharePoint Online, Copilot 365, and Defender XDR were also affected by the same infrastructure issue
Source: androidauthority.com, 2026-11-12
Published there as: “Microsoft Outlook is experiencing a major outage”
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