Global users were cut off from their email accounts via both web browsers and mobile apps following a disruption that surged shortly before 1:00 p.m. ET. Microsoft traced the issue to an elevated load on infrastructure spanning multiple geographic regions, though accompanying platforms like Teams largely avoided disruption. Technicians redistributed connection traffic and began restarting impacted servers to bring them back online. The root cause remains under review as engineers verify whether external demand or internal routing triggered the surge.
Key points
Technical teams are investigating whether an internal routing shift or real user demand c…: Technical teams are investigating whether an internal routing shift or real user demand caused the heavy load.
It remains uncertain when full email access will be completely restored for impacted user…: It remains uncertain when full email access will be completely restored for impacted users globally.
Mitigation efforts are ongoing as traffic is actively shifted away from the affected corp…: Mitigation efforts are ongoing as traffic is actively shifted away from the affected corporate infrastructure.
Sources checked by our analysis pipeline: 1
Over the last hour or so, reports have come in from around the world that people can’t access their Outlook email, either through the web or apps. Microsoft has acknowledged the issue from its Microsoft 365 Status account, saying that “We’ve determined a portion of infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors.”
Microsoft Outlook is down
Microsoft 365 issues are cutting people off from their email right now.
Microsoft 365 issues are cutting people off from their email right now.
There were also some reports of problems with Teams, but most of the people reporting issues say Teams is still working now.
Now Microsoft says:
We’ve completed redistributing connection traffic across our worldwide infrastructure, and we’re moving additional traffic off the affected infrastructure to further reduce load. We’re also restarting affected servers to return them to service. In parallel, we’re investigating whether the elevated traffic reflects a genuine increase in requests or a shift in how traffic is being routed across our infrastructure.
Officials in Kyiv are raising alarms over connectivity issues on the satellite network, alleging that deliberate speed caps are meant to pressure their position ahead of talks with Moscow. The aerospace company firmly disputes these allegations, insisting the infrastructure continues to operate without any newly imposed constraints.
The incident marks another disruption to enterprise workflows reliant on Microsoft's productivity suite. Affected users experienced service interruptions while accessing their accounts and communications. Technical teams are monitoring the situation as background factors continue to emerge.
An unauthorized third party gained access to internal systems, Actors, and platform APIs by leveraging compromised credentials over a two-day window. The intruder accessed personal information and stored records belonging to select customers before the intrusion was halted. Authorities have been alerted while affected clients receive direct guidance and remediation support.