Microsoft Outlook experiences widespread outage affecting users globally
A service disruption on Nov. 12 impacted Microsoft Outlook and other Microsoft 365 applications, with thousands of reports from the United States and Singapore.
Microsoft Outlook suffered a service interruption on Nov. 12, affecting users in multiple regions. The company said it was investigating the issue and working "aggressively" to reduce the impact.
Initially, Microsoft reported outage reports from the Americas, but later confirmed that the problem could affect Microsoft 365 connectivity worldwide. Downdetector recorded nearly 130,000 Outlook issues shortly after 1 p.m. Eastern Time, with reports decreasing to about 60,000 by 3 p.m. Eastern Time.
In Singapore, outage reports rose to 195 for Outlook and 94 for Microsoft 365 by 6:40 a.m. local time, up from 75 an hour earlier. Users also experienced difficulties with Microsoft Teams.
"We’ve determined a portion of infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors," Microsoft wrote on X. "We’re aggressively pursuing all pathways to reduce impact. We’ve paused all deployments, we’re moving additional traffic off the affected infrastructure, and we’re restarting affected servers to return them to service."