Global Technical Outage Hits Microsoft Services, Disrupting Email for Thousands of Users

Work and digital communication experienced widespread disruption on Thursday following a sudden technical outage that struck Microsoft services, leaving tens of thousands of users around the world unable to access their emails via the Outlook email service.

An Issue Spanning Continents

The American company initially stated that it was investigating outage reports originating from the Americas region, before later confirming that the issue had begun threatening connectivity to Microsoft 365 services for all users anywhere in the world—a digital suite that includes essential daily work applications such as Outlook and Teams.

According to data from the outage tracking platform Downdetector, nearly 130,000 users reported technical issues with the Outlook service shortly after 6:00 PM GMT (7:00 PM Paris time). Despite more than three hours having passed since the onset of the glitch, around 50,000 users remained unable to log in and access their email.

Technical Mobilization and Impact on AI Tools

Microsoft confirmed via its official account on the X platform that it was working diligently to mitigate the impact of the outage, announcing a freeze on all deployment updates, measures to relieve pressure on the infrastructure, and the rebooting of affected servers in an effort to restore service stability as quickly as possible.

The impact of the software glitch extended to AI-powered virtual assistants that link to Microsoft accounts to read messages and sync appointments; the Copilot assistant, along with OpenAI's ChatGPT and Anthropic's Claude, faced total difficulties in accessing the Microsoft 365 environment.

The fallout also reached vital facilities, as the University of Iowa Hospitals and Clinics network experienced an outage in its email and voice communication services, prompting the administration to direct patients to use the alternative digital portal to communicate with healthcare staff.