A significant outage affected Microsoft platforms, including Outlook, on Thursday, causing widespread disruption for users. Many reported difficulties in accessing their email accounts and encountered various errors throughout Microsoft's suite of applications. By 1:30 p.m. ET, approximately 130,000 users had reported issues on outage tracker Downdetector, with notable complaints about the inability to send and receive emails, as well as delays in service.
In addition to Outlook, thousands of users experienced problems with Microsoft Teams, the company's workplace messaging application, as well as its AI assistant, Copilot, and other Microsoft 365 services. Microsoft acknowledged the disruptions, particularly affecting its email and Teams applications, and stated that it was actively investigating the issues.
Through updates on social media, Microsoft, based in Redmond, Washington, confirmed that it was aware of users experiencing difficulties accessing Exchange Online mailboxes via multiple connection methods across the Americas. The company explained that a segment of its infrastructure was undergoing “elevated load,” which was likely contributing to connectivity errors. A number of servers were deemed “unexpectedly unavailable,” which resulted from a problem that caused them to fail during routine automated checks.
As part of their ongoing communication, Microsoft stated, “While we're working to mitigate impact, we’ve confirmed the issue may affect Microsoft 365 service connectivity for users in any region.” They advised users that more information would be available in the Microsoft 365 admin center under reference EX1550543. Although the company did not immediately detail the underlying cause of the server failures, it did indicate that efforts to implement a fix were underway.
Additionally, Microsoft emphasized their commitment to addressing the situation, stating through their Microsoft 365 Status account on X, “We’re aggressively pursuing all pathways to reduce impact.” Earlier in the day, the company had reported that problems related to Microsoft Teams in North America had been “successfully restored,” yet many users continued to face connectivity challenges.
This outage represents a significant disruption for a wide array of users relying upon Microsoft's services for communication and collaboration. The scale of the incident highlights the potential impact of technical issues on both individuals and organizations using these essential tools.
