Microsoft 365 Outage Blocks Access to Teams, Exchange Online, and Admin Center – Updated
On Wed, Oct 8, 2025, Microsoft 365 experienced a significant outage affecting user access to critical services, including Microsoft Teams, Exchange Online, and the Microsoft 365 admin center.
On Wed, Oct 8, 2025, Microsoft 365 experienced a significant outage affecting user access to critical services, including Microsoft Teams, Exchange Online, and the Microsoft 365 admin center.
The outage began late in the evening, impacting global organizations that rely on Microsoft 365 for essential operations. Microsoft promptly acknowledged the issue and initiated a high-priority response to identify the root cause and restore services.
At approximately 10:56 PM GMT+5:30, Microsoft identified a potential issue within its directory operations, which is part of the dependent service infrastructure. This issue was related to how user authentication and service requests were processed.
The outage began late in the evening, impacting global organizations that rely on Microsoft 365 for essential operations.
To address the outage, Microsoft engineers implemented a mitigation strategy at 11:36 PM GMT+5:30. This involved rebalancing the service infrastructure by redirecting traffic away from the affected components to stabilize the platform.
The rebalancing efforts were successful, and by the early hours of Thu, Oct 9, 2025, the recovery process was underway. Microsoft reported that services were gradually being restored, and the company continued to monitor the environment closely to prevent recurrence.
Microsoft's teams remain vigilant, ensuring stability across all impacted regions and services. Continuous updates are being provided to confirm the restoration of full service stability.
Based on reporting by Cyber Security News.