Over 1,200 reports of login issues with Microsoft Outlook surfaced on Downdetector by 9:38 a.m. ET on Monday. Users began experiencing difficulties accessing their email accounts around 5 a.m. ET, often encountering messages related to "too many requests" or finding themselves unexpectedly logged out.
In response to the rising number of complaints, Microsoft acknowledged the problems on its status page. The company indicated that reverting a recent update did not resolve the login challenges. It is actively investigating two specific error scenarios to determine their root causes while monitoring service telemetry for further insights.
The issues are affecting users across various platforms, including the iOS app. Microsoft continues to work on solutions as this situation develops.