Cornerstone experienced a notice incident on August 11, 2025, lasting —. The incident has been resolved; the full update timeline is below.
Update timeline
- resolved Aug 11, 2025, 11:16 AM UTC
The CSOD Technology Team observed a performance degradation affecting US SL3. The problem began on August 10th, 12:45 AM Pacific Time and was resolved on August 10th, 03:20 AM Pacific Time. During this time, clients with portals on this swimlane may have experienced slow performance or intermittent errors while accessing the application.
- postmortem Aug 16, 2025, 05:44 AM UTC
**Issue Summary:** On August 10th, 2025, the AWS US PRD SL3 environment experienced intermittent Timeouts, causing login failures for users and impacting the availability of services on the US SL3 platform. The outage occurred during an extended maintenance window, which caused system instability and connection timeouts across multiple components. **Root Cause:** System instability and timeouts occurred during an extended maintenance window, leading to login failures and degraded platform performance. **Corrective Action:** Cornerstone team halted the maintenance activities and reapplied necessary updates after verifying their stability. Services were fully restored following these actions. **Preventive Measures:** To reduce the chance of recurrence, Cornerstone will: * Monitor system performance closely during maintenance windows * Apply updates in smaller steps where possible to reduce risk