Microsoft has said it investigates an outage that brought down Microsoft’s cloud-based office services, including the meetings software, Teams, worldwide.
Microsoft reported authentication issues for its cloud services at around 9.25 pm UTC, meaning people were having problems logging into the online services Teams, Outlook, and Office.
The outage had affected services worldwide.
Microsoft said people who were logged into an existing 365 session were still able to keep using the service.
“We’ve determined that a specific portion of our infrastructure is not processing authentication requests on time. We’re pursuing mitigation steps for this issue,” the company said in a status update.
“In parallel, we’re rerouting traffic to alternate systems to provide further relief to the affected users.”
On Twitter, the company blamed a recent update to the service for causing the outage and said the update would be rolled back to mitigate issues.
At 3 am UTC, Microsoft reported the services were mostly restored, but a small subset of customers in North America and the Asia Pacific were still unable to access services.
During the pandemic, services like Teams have been vital for people to continue to work from home. In April, Microsoft reported 75 million daily active users on Teams due to more people working from home.