An ongoing service disruption is currently affecting Microsoft, significantly impeding administrators' access to vital management utilities within the Microsoft 365 Admin Center.
The issue, first prominently identified on July 24, 2025, has persisted into the subsequent day. This marks the second such occurrence this week, raising concerns about the service's overall reliability.
Given the substantial reliance of businesses on Microsoft 365 for their operational requirements, this interruption underscores inherent vulnerabilities within cloud-based infrastructure. Due to the outage, administrators are presently unable to monitor service health, manage user accounts, or execute critical configurations, which could potentially halt IT operations in various organizations.
Microsoft officially acknowledged the problem via its service health status page, advising affected users to seek updates through channels other than the currently inaccessible portal.
Thousands of Microsoft 365 administrators, holding either business or enterprise subscriptions, are directly impacted, encountering “Runtime Error” messages upon their login attempts. This situation consequently generates ripple effects for end-users.
Administrators are hindered from promptly addressing service problems, potentially causing delays in rectifying issues related to email, Teams, or other applications.
Enterprises within critical sectors such as healthcare and education, which require immediate administrative access, are reporting significant declines in productivity. For instance, comparable service disruptions earlier in July resulted in communication blackouts for millions.
The Admin Center functions as the primary hub for overseeing Microsoft 365 services, including Exchange Online and Teams. This current problem mirrors a prior disruption on July 24, when infrastructure in the Eastern US failed to achieve anticipated performance levels.
While Microsoft has not disclosed the precise count of impacted users, it has verified that the incident is being monitored under the designation MO1120879. This event contributes to a recurring trend of outages in 2025, notably including a 19-hour worldwide interruption in July attributed to alterations in configuration.
Although the outage predominantly affects administrators whose traffic is routed via the compromised US East region infrastructure, there are indications of a more widespread global impact, encompassing areas such as Europe and Asia.
The impact is not uniform across all geographical areas; consumer-oriented services, such as Outlook.com, continue to function. Nevertheless, enterprise clients in the US, UK, and other territories have reported extensive failures in access.
Initial inquiries indicate that underperforming regional service infrastructure is the fundamental cause of authentication and access issues. Microsoft attributes this situation to a segment of its system failing to meet anticipated performance benchmarks, akin to previous problems stemming from faulty updates or routing mistakes.
Crucially, no indications of cyberattacks have been reported, setting this incident apart from earlier security breaches.
Microsoft advises utilizing alternative web addresses, such as direct links to the Microsoft 365 Admin Center or the service health dashboard, to obtain updates.
Administrators are also urged to track the official Microsoft 365 Status account on X for immediate information. The corporation is in the process of deploying resolutions and suggests clearing browser caches or attempting alternative network connections as interim solutions.
**Updates**
* **Jul 24, 2025, 7:24 AM GMT+5:30**: Microsoft confirmed it was investigating access problems, with widespread reports of runtime errors.
* **Jul 24, 2025, 6:45 AM GMT+5:30**: Early notifications identified Eastern US infrastructure as the primary area of concern.
* **Jul 24, 2025, 6:24 AM GMT+5:30**: The first customer complaints surfaced, leading to official tracking of the incident.
As of July 26, 2025, Microsoft is still engaged in mitigation activities, and a complete resolution is anticipated shortly. Businesses are counseled to formulate backup strategies for recurrent cloud-based interruptions.