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Microsoft 365 Outage Disrupts Access to Admin Center, Services, and Entra ID

A significant service outage is currently impacting Microsoft 365, hindering user access to the admin center and other services dependent on Microsoft Entra ID for authentication .

HBy Hazel CaldwellOct 09, 20252 min read

A significant service outage is currently impacting Microsoft 365, hindering user access to the admin center and other services dependent on Microsoft Entra ID for authentication .

The disruption commenced on Thu, Oct 9, 2025, and is causing widespread access issues for organizations reliant on Microsoft's cloud-based productivity suite.

The outage affects users attempting to access the Microsoft 365 admin center or authenticate via Microsoft Entra ID.

This dependency impacts several Microsoft 365 services, including Outlook, Teams, and SharePoint, potentially making them inaccessible to end-users.

Microsoft has confirmed that it is investigating reports of users unable to access these essential services. The initial investigation phase involved reviewing dependent service pathways to identify the failure source and determine the first course of action.

IT administrators face challenges due to the inability to access the admin center, as it hampers their ability to manage their environment or troubleshoot user-facing issues.

The outage affects users attempting to access the Microsoft 365 admin center or authenticate via Microsoft Entra ID.
Hazel Caldwell · Thehackingpost

Microsoft’s investigation has identified an issue within the Azure Front Door (AFD) service as the primary cause of the outage.

This service manages and routes traffic to Microsoft's global web applications, and its malfunction is causing intermittent access issues to the Microsoft 365 admin portals.

The failure within AFD is believed to have a cascading effect, impacting services that use Entra ID. In response, Microsoft's engineering teams are reviewing recent changes to the AFD environment that might have triggered the disruption.

The company is analyzing diagnostic data to isolate the exact cause and understand the failure mechanics. As the investigation progresses, efforts are concentrated on the load-balancing infrastructure within its environment.

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Load balancers distribute incoming network traffic efficiently across multiple servers, and a fault in this system could explain the intermittent connectivity issues and access failures.

Microsoft is actively working on mitigation strategies to resolve the underlying problem and restore service promptly.

An update on the situation is expected on Thu, Oct 9, 2025, at 5:30 PM GMT+5:30, as engineers continue to work towards a resolution.

Based on reporting by Cyber Security News.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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