Microsoft is investigating an ongoing global outage blocking access to some Microsoft 365 and Azure services.
"We're currently investigating access issues and degraded performance with multiple Microsoft 365 services and features. More information can be found under MO842351 in the admin center," Redmond said.
However, many users report having issues connecting to the Microsoft 365 admin center and opening the Service Health Status page, which should provide real-time information on issues impacting Microsoft Azure and the Microsoft 365/Power Platform admin centers.
For now, the company says this incident affects users worldwide but only a subset of its services.
"We are investigating reports of issues connecting to Microsoft services globally. Customers may experience timeouts connecting to Azure services," Redmond says on the Azure status page.
"We have multiple engineering teams engaged to diagnose and resolve the issue. More details will be provided as soon as possible."
Since the start of this outage roughly one hour ago, Downdetector has also received hundreds of reports, with affected users saying Entra, Intune, and Power Apps are down. They're also experiencing issues connecting to Microsoft 365 websites and Outlook.
Despite Microsoft's ongoing investigation, the Office service health and the Microsoft 365 network health status pages currently show no issues with Microsoft's network and availability, the customer's network infrastructure, or internet service provider availability.
Update July 30, 10:14 EDT: Microsoft confirmed that the outage has impacted the Microsoft 365 admin center, Intune, Entra, Power BI, and Power Platform services. It also added that SharePoint Online, OneDrive for Business, Microsoft Teams, and Exchange Online are not affected.
"Users who can access the impacted Microsoft 365 services may experience latency or degraded feature performance," Microsoft explains on the service health status page.
"We’re analyzing traffic patterns within a section of a networking infrastructure to assist our investigations. Additionally, we’re reviewing mitigation options, including potential failovers, to provide relief."
Update July 30, 11:15 EDT: Microsoft says service availability is improving after a networking configuration change.
"We've implemented a networking configuration change, and some Microsoft 365 services have performed failovers to alternate networking paths to provide relief," the company said.
"Monitoring telemetry shows improvement in service availability, and we're continuing to monitor to ensure full recovery."
Update July 30, 14:14 EDT: Microsoft says the outage was caused by an "unexpected usage spike" that "resulted in Azure Front Door (AFD) and Azure Content Delivery Network (CDN) components performing below acceptable thresholds, leading to intermittent errors, timeout, and latency spikes."
"We are updating our mitigation approach to minimize these side effects, and applying these following Safe Deployment Practices - beginning in Asia Pacific regions and then expanding in phases," the company added.
Update July 30, 16:54 EDT: Microsoft says "the vast majority of customers and services are fully mitigated," and its engineers are "in the final stages of validating recovery."
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