Microsoft claims it has “rolled back a network modification” that it believes is causing tens of thousands of customers worldwide to be unable to access its services, including Teams and Outlook.
According to Downdetector, which analyzes website outages, over 5,000 customers in the United Kingdom claimed that the email service Outlook was unavailable.
Other services, like as Teams and Xbox Live, were also reported to be down.
Microsoft stated that it is “watching the service” as the update goes into effect.
Previously, the firm said it had “isolated the problem to networking configuration issues” and was analysing the “best mitigation strategy to address these without causing additional impact”.
Microsoft also said it was investigating a connectivity issue with its cloud computing service, Azure, affecting what it called “a subset of users”.
Microsoft Teams is used by more than 280 million people globally, primarily in businesses and schools, where it can be of critical importance for calls, meetings and general service organisation.
According to Downdetector, issues have been reported in many countries around the world, with thousands of reports in India and Japan alone.
As well as Teams and Outlook, the services affected according to the Microsoft 365 status page are SharePoint Online, OneDrive for Business, Microsoft Graph, PowerBi, and Microsoft 365 Admin Center.
It says on the page that “any user serviced by the affected infrastructure may be unable to access multiple Microsoft 365 services”.