Confluent experienced a major incident on September 27, 2025 affecting Confluent Cloud, lasting 22h 24m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Sep 27, 2025, 01:00 AM UTC
As of 23:54 UTC on 26 Sep 2025, customers with clusters in the Azure Switzerland North region may experience downtime due to an Azure region outage. Confluent engineering has been engaged and is investigating the issue.
- identified Sep 27, 2025, 03:01 AM UTC
As of 23:54 UTC on 26 Sep 2025, customers with clusters in the Azure Switzerland North region may experience service unavailability or degraded performance due to an Azure region outage. Azure has identified a networking issue and are preparing a hotfix.
- identified Sep 27, 2025, 05:37 AM UTC
Starting at 23:54 UTC on 26 September 2025, customers in Switzerland North may experience service unavailability or degraded performances for resources hosted in the region. Virtual Machines may have shutdown to preserve data integrity. We were alerted to this issue by our telemetry informing us in a significant drop in traffic. It was discovered that a recent deployment introduced a malformed prefix in one of the certificates used for connection authorization. We have pinpointed the deployment error involving the certificate prefix and are rolling back the faulty deployment to restore normal traffic flow and service availability. Majority of the impacted services have been fully recovered, and a subset are nearing completion. We continue to monitor traffic and service stability to ensure full recovery.
- identified Sep 27, 2025, 09:26 PM UTC
Starting 23:54 UTC on 26 Sep 2025, customers with clusters in the Azure Switzerland North region may experience service unavailability or degraded performance due to an Azure region outage. Azure has fixed the issue and we are working to recover all affected services. The majority of impacted services have been fully recovered, and a subset are nearing completion. We continue to monitor traffic and service stability to ensure full recovery.
- resolved Sep 27, 2025, 11:24 PM UTC
All services in the Azure Switzerland North region have now been fully recovered.