Microsoft 365 Outlook, Teams, SharePoint outages – here’s what we know

On By Littum

A significant Microsoft outage disrupts global access to critical services such as Outlook, Teams and Exchange Online, leaving businesses, government agencies and individual users struggling with the consequences. As of early Monday morning, the outage has escalated, with over 5,000 users reporting problems by midday on Down detector. While Microsoft is reporting remediation progress, there are still widespread issues as of this writing.

About twelve hours ago the company acknowledged the problemstating that “we are investigating an issue affecting users trying to access Exchange Online or Microsoft Teams calendar functionality. For more information, please refer to MO941162 in the admin center.”

Teams, Outlook, Exchange, SharePoint – all affected

The outage has affected Microsoft Teams’ calendar functionality, Outlook email services, Exchange Online and SharePoint – tools fundamental to the workflows of millions, as reported by Bleeping Computer. Major urban centers such as New York, Chicago, Los Angeles and Tampa are experiencing notable service disruptions. While some users report partial functionality, such as receiving emails without the ability to download attachments, others remain completely offline.

For businesses, this disruption has a cascading effect. Team meetings are delayed, project timelines are disrupted, and employees must seek alternative methods of communication. In a world increasingly dependent on digital tools for productivity, outages like this underscore how dependent we’ve become on seamless cloud services.

Root cause and Microsoft’s response

According to Microsoft, a recent system change caused the outage. The company has implemented a two-pronged approach to address the issue. A global rollout of a comprehensive fix and manual restart of affected machines to speed up service recovery. While Microsoft claims that over 90% of affected environments have received the fixreports from users indicate ongoing problems.

This is an ongoing story. Updates will be provided as more information becomes available.