Update - Microsoft has confirmed that the issue is related to elevated query volume and concurrency from one or more workspaces, which has resulted in backend throttling and intermittent failures of certain automation-related operations. They are actively investigating the issue and implementing mitigation measures while closely monitoring service availability.
Sep 22, 2026 - 15:31 UTC
Sep 22, 2026 - 15:31 UTC
Identified - Affected Service: Microsoft Sentinel
Region: East US
Impact:
Customers using Microsoft Sentinel in the East US region may experience intermittent failures or delays when accessing Entity Pages and Automation Service operations.
Start Time:
22 September 2026, 10:37 UTC
Current Status:
Microsoft has identified an increase in failed service requests affecting Microsoft Sentinel in East US. Initial investigation indicates the issue is related to elevated query volume and concurrency from one or more workspaces, resulting in backend throttling. Consequently, some automation-related operations may fail intermittently.
Next Update:
Microsoft will provide the next update within 60 minutes or sooner if significant developments occur.
Microsoft is actively investigating the issue and monitoring service health to determine the root cause and mitigation steps.
Thank you for your patience and understanding throughout this matter.
North America: 1-866-929-3528
EMEA: +41 58 317 77 77
Kind regards,
The Cyber Fusion Center
Sep 22, 2026 - 12:55 UTC
Region: East US
Impact:
Customers using Microsoft Sentinel in the East US region may experience intermittent failures or delays when accessing Entity Pages and Automation Service operations.
Start Time:
22 September 2026, 10:37 UTC
Current Status:
Microsoft has identified an increase in failed service requests affecting Microsoft Sentinel in East US. Initial investigation indicates the issue is related to elevated query volume and concurrency from one or more workspaces, resulting in backend throttling. Consequently, some automation-related operations may fail intermittently.
Next Update:
Microsoft will provide the next update within 60 minutes or sooner if significant developments occur.
Microsoft is actively investigating the issue and monitoring service health to determine the root cause and mitigation steps.
Thank you for your patience and understanding throughout this matter.
North America: 1-866-929-3528
EMEA: +41 58 317 77 77
Kind regards,
The Cyber Fusion Center
Sep 22, 2026 - 12:55 UTC
About This Site
Having trouble? Please do not hesitate to contact the Kudelski Security Cyber Fusion Center via phone or email.
👉🏼 EMEA: +41 58 317 77 77 or [email protected]
👉🏼 US: 1 (866) 929-3528 or [email protected]
The below is a log of past interruptions of Kudelski Security services.
Client Portal
Operational
Client Portal API
Operational
Monthly Reporting
Operational
CFC Phone System
Operational
Security Alert / Event Ingestion Pipeline / Managed System Access
Degraded Performance
MDR ONE
Operational
Vulnerability Scanning
Operational
MDR One Resolute
Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.