On December 19, 2025, Microsoft Teams, a pivotal platform for remote collaboration, experienced a significant outage that disrupted services for thousands of users worldwide. The issues began around 2:30 PM ET (7:30 PM GMT), with users reporting delays in message delivery, failed message transmissions, and other functional impairments.
Microsoft promptly acknowledged the problem through their official status account, stating:
> We’re investigating an issue in which users may be experiencing Microsoft Teams messaging delays and problems with other service functions. We’re observing recovery in our telemetry and are continuing our analysis to identify the impacted scenarios and determine the cause of this issue.
Administrators were directed to the Microsoft 365 admin center under incident ID TM1200517 for further updates.
Outage tracking platforms, such as DownDetector, recorded a sharp increase in user reports, with complaints peaking in the thousands within hours of the incident’s onset. Users from various regions, including the United States, Europe, Australia, and Asia, reported frustrations with delayed messages, inability to send files, and general latency within the application. One user noted, Definitely have multiple users in different regions experiencing noticeable latency in Teams, highlighting the global scale of the problem.
The outage extended beyond Teams in some cases, with reports of impacts on Microsoft 365 services like Outlook and OneDrive, particularly in Asia, where work was brought to a halt. This follows a pattern of recent disruptions for Microsoft cloud services, including a similar incident just days ago affecting Japan and China.
Businesses and remote workers took to social media to express their frustrations. One cybersecurity analyst posted, Microsoft Teams just took a coffee break. Teams, 365, Azure and more hit by outage for thousands worldwide.
As of the latest updates, Microsoft reported signs of recovery but continued monitoring. No estimated time for full resolution has been provided, and the root cause remains under investigation. Users are advised to monitor the Microsoft 365 status page or DownDetector for real-time developments.
This incident underscores the critical role of Microsoft Teams in modern workplaces and the widespread impact that service disruptions can have on global productivity.
