Overview
- Outlook.com experienced a Monday service degradation that produced intermittent log‑in failures, “too many requests” errors and unexpected sign‑outs across web and mobile clients.
- Microsoft said client sign‑in scenarios appear to be part of the problem and it is validating interactions across service components to pinpoint next steps.
- Engineers began reverting a recent change as a mitigation and are watching customer reports and service telemetry for signs of improvement.
- Outage tracker Downdetector recorded more than 1,000 reports, with some tallies above 1,500, and spikes before 5 a.m. ET and near 10 a.m. in the UK.
- Most complaints centered on logging in, at roughly 57–68 percent, with others reporting delayed email sync, repeated password prompts and app crashes on phones.