Major incident

Cornerstone: Emails not processed on FRA SL1

Sep 14, 2026, 14:09 UTC

started

18:06 UTC

resolved

3 h 57 min

duration

Affected: Response Time

Current status of Cornerstone: Operational — live Cornerstone status

Timeline

Sep 14, 2026, 14:09 UTC
identified
The issue has been identified and engineering is working on restoring the service.
Sep 14, 2026, 15:58 UTC
monitoring
A fix has been implemented, and the queues are no longer stuck. However, it will take some time to clear the backlog. We are continuing to monitor the queue.
Sep 14, 2026, 18:06 UTC
resolved
This incident has been resolved.

Updates as published by Cornerstone (original).

This was part of a wider event: 41 services reported incidents within the hour.

Kaseya 15:05 UTC · Datto Workplace - US Region - US-based users are currently unable to authenticate to US-hosted cells
Thomson Reuters Legal 15:04 UTC · HighQ UK File Viewer Session Expired Errors
Dartmouth College 14:58 UTC · Carpenter Hall Network Outage
Telnyx 14:53 UTC · Intermittent errors for /v2/ai/openai/models and /v2/ai/openai/chat/completions
PowerSchool Products 14:34 UTC · Atrieve ADS Service Interruption
Plex 14:31 UTC · DNS Issues with plex.tv API
Vanta 14:10 UTC · Some Vanta AI features are unavailable
Brown University 13:36 UTC · Tableau Server Outage
Red Hat 13:34 UTC · Initial: Quay.io Push/Pull Degraded
Brainly 13:28 UTC · [eodev.com] Elevated number of errors and degraded performance