Microsoft 365 Outage History

Users in Australia were unable to access Microsoft 365 Apps and services through portal.office.com and m365.cloud.microsoft.com for 7.5 hours. The issue was caused by resource contention from a spike in demand on the portal infrastructure, which reduced the rate at which user requests were processed. Microsoft resolved the incident by implementing configuration changes to improve service accessibility and validated the fix with affected users.

Microsoft 365 users in North America experienced 504 gateway timeout errors when trying to access services requiring Multi-Factor Authentication (MFA), preventing sign-ins to Office 365, Teams, and other Microsoft 365 applications. Users reported being unable to connect to Teams calls, access MS365 on the web, login to 365 apps, and issues with SSO to enterprise applications, with some experiencing problems since February 21st. The incident lasted 2.7 hours while Microsoft investigated Microsoft Entra sign-in logs, network telemetry, and third-party authentication dependencies to resolve the authentication issues.