PagerDuty incident

Issue Identified - Slack Outage

Resolved after 9 hours 56 minutes, affecting Slack (US) (Slack (US)) and Slack (EU) (Slack (EU)), on May 28, 2026.

resolved May 28, 2026, 10:27 AM UTC

We have resolved an incident where PagerDuty customers in all Service Regions experienced issues with Slack functionality, due to an Incident at Slack. Event ingestion and incident notification delivery were not affected. The incident is now resolved, and there is no ongoing impact to customers....

Started
May 28, 2026, 12:31 AM UTC
Resolved
May 28, 2026, 10:27 AM UTC
Duration
9h 56m
Detected by Pingoru
May 28, 2026, 12:31 AM UTC

Affected components

Slack (US) (Slack (US))Slack (EU) (Slack (EU))

Update timeline

  1. investigating May 28, 2026, 12:31 AM UTC

    We are investigating an incident where PagerDuty customers in all Service Regions are experiencing issues with Slack functionality, due to an ongoing Incident at Slack. The PagerDuty web application continues to be available. Impacted customers may see issues with Slack workflows /...

  2. investigating May 28, 2026, 12:50 AM UTC

    We are continuing to monitor an incident where PagerDuty customers in all Service Regions are experiencing issues with Slack functionality, due to an ongoing Incident at Slack. The PagerDuty web application continues to be available. Impacted customers may see issues with Slack...

  3. investigating May 28, 2026, 01:57 AM UTC

    We are continuing to monitor an incident where PagerDuty customers in all Service Regions are experiencing issues with Slack functionality, due to an ongoing Incident at Slack. We are seeing improvements in Slack notification delivery, and will continue to monitor for further issues. The...

  4. investigating May 28, 2026, 03:12 AM UTC

    We are continuing to monitor an incident where PagerDuty customers in all Service Regions are experiencing issues with Slack functionality, due to an ongoing Incident at Slack. Issues with Slack notification delivery and Slack Incident card updates should now be resolved. The PagerDuty...

  5. investigating May 28, 2026, 04:11 AM UTC

    We are continuing to monitor an incident where PagerDuty customers in all Service Regions are experiencing issues with Slack functionality, due to an ongoing Incident at Slack. Issues with Slack notification delivery and Slack Incident card updates should now be resolved. The PagerDuty...

  6. investigating May 28, 2026, 05:18 AM UTC

    We are continuing to monitor an incident where PagerDuty customers in all Service Regions are experiencing issues with Slack functionality, due to an ongoing Incident at Slack. Issues with Slack notification delivery and Slack Incident card updates should now be resolved. The PagerDuty web...

  7. resolved May 28, 2026, 10:27 AM UTC

    We have resolved an incident where PagerDuty customers in all Service Regions experienced issues with Slack functionality, due to an Incident at Slack. Event ingestion and incident notification delivery were not affected. The incident is now resolved, and there is no ongoing impact to customers....

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