Microsoft on Monday morning said it is investigating an issue impacting users attempting to access services including its Outlook email product. In a post on X, Microsoft wrote it is assessing "an issue impacting users attempting to use Exchange Online or functionality within Microsoft Teams calendar.

Microsoft said Monday that it has identified the cause of a major Outlook and Teams outage, and is deploying a fix to the problem.

Several Microsoft programs, including Outlook, Microsoft 365, and Teams, are experiencing outages, according to reports on Downdetector.