Microsoft 365 Admin Center Outage Blocks Access for Admins Worldwide

Microsoft is currently facing an outage that affects the Microsoft 365 Admin Center, preventing administrators from accessing essential management tools.

The issue, which emerged prominently on July 24, 2025, has persisted into the following day, marking the second such incident this week and raising concerns about service reliability.

As businesses rely heavily on Microsoft 365 for operations, this disruption underscores the vulnerabilities in cloud-based infrastructure.

The outage has left admins unable to monitor service health, manage user accounts, or perform essential configurations, potentially halting IT operations across organizations.

Microsoft acknowledged the problem via its service health status page, advising affected users to check for updates outside the inaccessible portal.

Thousands of Microsoft 365 administrators with business or enterprise subscriptions are directly affected, encountering “Runtime Error” messages when attempting to log in.

This has ripple effects on end-users, as admins cannot address service issues promptly, potentially leading to delays in resolving email, Teams, or other application problems.

Organizations in sectors like healthcare and education, which depend on real-time admin access, report significant productivity losses. For instance, during similar outages earlier in July, millions experienced communication blackouts.

The Admin Center serves as the central hub for managing Microsoft 365 services, including Exchange Online and Teams. The current issue follows a similar disruption on July 24, where Eastern US infrastructure failed to meet performance thresholds.

Microsoft has not disclosed the exact number of affected users, but confirms it’s tracking the incident under MO1120879. This adds to a pattern of 2025 outages, including a 19-hour global disruption earlier in July linked to configuration changes.

The outage primarily impacts admins routed through affected US East region infrastructure, but reports suggest a broader global reach, including Europe and Asia.

Not all regions are equally hit; consumer services like Outlook.com remain operational. However, enterprise users in the US, UK, and beyond have reported widespread access failures.

Preliminary investigations point to underperforming regional service infrastructure, causing authentication and access failures.

Microsoft attributes it to a portion of the system not meeting expected thresholds, similar to past issues involving buggy updates or routing errors. No evidence of cyberattacks has been reported, distinguishing it from prior security incidents.

Microsoft recommends using alternative URLs, like the Microsoft 365 admin center direct links or the service health dashboard, for updates. Admins should monitor the official Microsoft 365 Status account on X for real-time information.

The company is deploying fixes and advises clearing browser data or trying different networks as temporary workarounds.

Updates

• Jul 24, 2025, 7:24 AM GMT+5:30: Microsoft confirms investigation into access issues; runtime errors reported widely.
• Jul 24, 2025, 6:45 AM GMT+5:30: Initial alerts highlight Eastern US infrastructure as the focal point.
• Jul 24, 2025, 6:24 AM GMT+5:30: First customer reports surface, prompting official tracking.

As of July 26, 2025, Microsoft continues mitigation efforts, with full resolution expected soon. Businesses are advised to develop contingency plans for recurring cloud disruptions.

Experience faster, more accurate phishing detection and enhanced protection for your business with real-time sandbox analysis-> Try ANY.RUN now