BleepingComputer has received numerous reports from users experiencing problems accessing Microsoft's services, including complaints that Outlook is down. According to Downdetector, which tracks user-submitted outage reports, complaints surged Thursday afternoon across numerous Microsoft services, including Outlook, Microsoft 365, Teams, Copilot, Azure, OneDrive, and the Microsoft Store.
In a Microsoft 365 admin center advisory tracked as MO1550821, Microsoft confirmed that customers may be unable to connect to multiple services, including Exchange Online, Microsoft Teams, SharePoint Online, Microsoft 365 Copilot, and Microsoft Defender XDR. The company says the Microsoft 365 incident began Thursday at 1:26 PM ET, although it began investigating reports of Exchange Online mailbox connectivity problems in the Americas earlier in the day.
Microsoft initially attributed the disruption to elevated infrastructure load across multiple regions, but has determined that the problem was caused by servers unexpectedly becoming unavailable. "We determined the elevated load isn't driven by an increase in traffic, but by a number of servers being unexpectedly unavailable; straining the remaining infrastructure. We're working to safely return them to service," Microsoft said in an update on X.
