Security News > 2020 > October > Microsoft 365 outage takes down Outlook and Microsoft Teams again
Microsoft 365 is currently experiencing an outage affecting users on both coasts of the United States and preventing them from accessing multiple Office 365 services.
Starting at approximately 2:30 PM EST today, Office 365 users all over the United States began having difficulty accessing their Outlook mail and using Microsoft Teams, with active calls getting dropped.
"We've received reports of user impact to Microsoft 365 services and are working to investigate the cause of the issue," Microsoft said on the Microsoft 365 Service health status page, adding that "Any user may see impact for this issue."
Last week, Office 365 suffered another outage in the United States and Australia that prevented users from logging into their Microsoft Teams, Office.com, Power Platform, and Dynamics365 accounts.
According to a preliminary post-incident report Microsoft issued after resolving the incident, the cause of last week's outage was a service update for Azure AD that mistakenly hit the production environment and caused service availability to degrade.
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