In April, a worldwide Microsoft Teams outage also prevented users from logging into their accounts, and blocked those already logged in from sending and receiving messages.Īnother large-scale outage in March knocked down multiple Microsoft services one month earlier, including Microsoft 365, Microsoft Teams, Exchange Online, Forms, Xbox Live, and Yammer following widespread Azure Active Directory login issues. We're continuing to investigate for a root cause and closely monitoring the service to ensure recovery is achieved. We’ve taken steps to improve performance across the affected infrastructure, and we’re beginning to see remediation for affected users. Engineering remains engaged to ensure that the service remains in a healthy state." "In parallel, we continue to investigate the underlying root cause so further actions can be taken to ensure the issue does not reoccur. We also are seeing the service returning to a healthy state," the company added. "We've performed scale up activities on the underlying infrastructure and we've received confirmation from some previously impacted users that the issue is now resolved for them.
In a new update to the MO287933 admin center tracking ticket, Microsoft says it's seeing the issue resolved for some of the affected users. Microsoft 365 Status September 28, 2021 Additional information will be provided in the admin center under MO287933. We're investigating an issue with Multi-Factor Authentication that is preventing some users from accessing Microsoft 365 services. This issue only affect on-premises users, and cloud hosted users are not affected." "This issue could potentially affect any user if they leverage MFA and either Network Policy Server (NPS) or Active Directory Federation Services (ADFS) to access Microsoft 365 services. "We've identified 503 errors from specific processing components and we're reviewing these errors to identify the source," Microsoft explained in the admin center. Additional information will be provided in the admin center under MO287933, the company tweeted.Īccording to the company, only customers using on-premises Multi-Factor Authentication (MFA) servers are impacted by this Microsoft 365 issue, with Cloud Authentication not affected. "We're investigating an issue with Multi-Factor Authentication that is preventing some users from accessing Microsoft 365 services. Microsoft is investigating an ongoing Multi-Factor Authentication (MFA) issue preventing some customers from logging into their Microsoft 365 accounts.
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