Duplicate Notifications
Final update
Between Dec 2, 2025 16:20 UTC and Dec 3, 2025 14:27 UTC, a change deployed to our workflow execution system caused duplicate notifications to be sent to some customers and triggered unexpected auto-reruns for a small number of projects. Impact: - Some customers received multiple failure notification emails for the same workflow. - The number of duplicate notifications varied based on how many jobs in the workflow were affected (e.g., marked skipped or cancelled). - A subset of customers may have received duplicate Slack notifications. - A small number of projects experienced duplicated auto-reruns. The issue has been fully mitigated, and notification behavior has returned to normal. We appreciate your patience while our team resolved this issue.
Timeline
- Resolved · Dec 2, 02:00 UTC
Between Dec 2, 2025 16:20 UTC and Dec 3, 2025 14:27 UTC, a change deployed to our workflow execution system caused duplicate notifications to be sent to some customers and triggered unexpected auto-reruns for a small number of projects. Impact: - Some customers received multiple failure notification emails for the same workflow. - The number of duplicate notifications varied based on how many jobs in the workflow were affected (e.g., marked skipped or cancelled). - A subset of customers may have received duplicate Slack notifications. - A small number of projects experienced duplicated auto-reruns. The issue has been fully mitigated, and notification behavior has returned to normal. We appreciate your patience while our team resolved this issue.
More from CircleCI
Full history| Started | Incident | Impact | Duration |
|---|---|---|---|
| Sep 2318:13 UTC | Delays in processing new signups and plan changes | none | 1h 53m |
| Sep 2116:22 UTC | Delays starting Linux Machine jobs | minor | 47m |
| Sep 1614:55 UTC | Customers may experience delays in UI updates | minor | 4h 35m |
| Sep 1514:42 UTC | Customers may experience delays in UI updates | minor | 2h 20m |
| Sep 1411:59 UTC | Increased wait times for macOS jobs | minor | 1h |
| Sep 1020:25 UTC | Issues loading pipelines for a small number of projects | minor | 1m |
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