October 9, 2025 Approximately 19:43 UTC and 23:59 UTC
A subset of RSA customers experienced intermittent connectivity issues when attempting to access RSA Cloud services. Our internal monitoring confirmed that all RSA service components remained fully operational throughout this period. However, some customer connections to our service were disrupted due to a broader Microsoft network routing issue.
Preliminary Root Cause
Microsoft has confirmed that this event was part of a large-scale Microsoft / Azure network outage affecting multiple U.S. regions. The issue began at 19:43 UTC (1:43 PM MT) and impacted connectivity for both Microsoft services (including O365 and administrative portals) and third-party applications hosted on Azure. Microsoft is preparing a formal Root Cause Analysis (RCA) for this incident. RSA’s support case has been linked to that investigation, and we will provide updates once Microsoft publishes their findings.
Following engagement with Microsoft, Azure Support has confirmed a large-scale network incident affecting multiple U.S. regions and impacting connectivity to various Microsoft and third-party cloud services. Microsoft has associated our support case with their Large-Scale Incident (LSI) and is preparing a formal Root Cause Analysis (RCA), which we will review once available.
Impact to RSA Customers
- RSA services themselves remained healthy and available. - Some customers were unable to reach RSA Cloud endpoints during the incident due to Microsoft routing disruptions. - Service accessibility returned to normal as Microsoft mitigated the network event.
Next Steps
RSA continues to work directly with Microsoft to review the final RCA and to ensure that any corrective actions taken at the Azure network level are communicated clearly.
Additional updates will be provided through our regular customer communication channels once Microsoft releases their full report.