Major incident

Cornerstone: Major Issue: Career Site is not unavailable for FRA SL1

Affected: Uptime

Current status of Cornerstone: Operational — live Cornerstone status

Timeline

1. Aug 28, 2026, 16:11 UTC
   investigating
   A production incident occurred in the EU Production environment hosted in Frankfurt (FRA PRD), resulting in the Careersite service becoming completely unavailable. This incident has been classified as a high-severity issue. Resolving this problem is our top priority, and we are working diligently to restore service as quickly as possible. Please check back periodically for additional updates, which will be posted as they become available.
2. Aug 28, 2026, 18:00 UTC
   investigating
   We are continuing to investigate this issue.
3. Aug 28, 2026, 18:03 UTC
   monitoring
   A fix has been implemented and we are monitoring the results.
4. Aug 28, 2026, 19:14 UTC
   resolved
   After a period of monitoring and no recurrence, this is resolved.
5. Sep 6, 2026, 18:24 UTC
   postmortem
   **Root Cause Analysis** ‌ **Incident Summary:** On August 28th, 2026, users in the FRA SL1 Production environment experienced intermittent issues accessing Career Site functionalities. **Impact:** Intermittent failures while accessing Career Site functionality, resulting in a degraded user experience and partial service disruption during the incident window. **Root Cause:** The issue was caused by a sudden increase in traffic that temporarily exceeded the available service capacity. During the resulting scale-up activity, newly provisioned application capacity required additional time to become fully operational and could not immediately accommodate the increased demand. The limited capacity buffer combined with the application startup time resulted in intermittent service failures until sufficient capacity was available to handle the traffic. **Resolution:** The service capacity and scaling configuration were adjusted to maintain an appropriate capacity buffer and better accommodate sudden increases in traffic. The affected service was also redeployed to restore stability. **Preventive Measures:** * Application startup and initialization processes will be optimized to reduce the time required for newly provisioned capacity to become fully operational * Baseline capacity and scaling thresholds will be reviewed and optimized to maintain sufficient buffer for sudden increases in traffic * Capacity and application health will continue to be monitored during traffic fluctuations to ensure sufficient resources are available to maintain service stability

Updates as published by Cornerstone (original).