Companies / Snowflake / incidents
Snowflake: INC20000199
Snowflake reported a critical outage in AWS - Europe (Frankfurt): customers may have been unable to access or use services and features through Snowsight. It started at 2026-09-04 07:34 UTC and resolved at 2026-09-04 10:10 UTC, lasting 2 h 36 min. Snowflake restored service by rolling back an underlying infrastructure configuration update; a postmortem RCA is available on Snowflake Community.
Machine-written from the archived incident (Sol). Check the timeline before relying on it.
Affected components: AWS - Europe (Frankfurt) - Developer ToolsDeveloper ToolsApplicationsAWS - Europe (Frankfurt) - ApplicationsAWS - Europe (Frankfurt) - Databases, Tables, and ViewsDatabases, Tables, and Views
Timeline of updates
- investigating
Current status: We're investigating an issue with Snowflake Data Cloud. We'll provide an update within 30 minutes. Customer experience: Customers hosted in the specified regions may be unable to access or use Snowflake services and features using Snowsight. ETA: An ETA is not yet available. We'll provide one as soon as possible. Workaround: There are currently no available workarounds for this issue. Incident start time: 07:00 UTC September 04, 2026
- investigating
Current status: We're continuing to investigate the issue with Snowflake Data Cloud. We'll provide another update within 30 minutes. Customer experience: Customers hosted in the specified regions may be unable to access or use Snowflake services and features using Snowsight. ETA: An ETA is not yet available. We'll provide one as soon as possible. In the meantime, we recommend that affected customers using replication initiate their failover procedures. Workaround: There are currently no available workarounds for this issue. Incident start time: 07:00 UTC September 04, 2026
- investigating
Current status: We're continuing to actively investigate the issue with Snowflake Data Cloud. The specific focus at this time is on infrastructure components responsible for authorizing incoming traffic. We'll provide another update within 30 minutes. Customer experience: Customers hosted in the specified regions may be unable to access or use Snowflake services and features using Snowsight. ETA: An ETA is not yet available. We'll provide one as soon as possible. In the meantime, we recommend that affected customers using replication initiate their failover procedures. Workaround: There are currently no available workarounds for this issue. Incident start time: 07:00 UTC September 04, 2026
- monitoring
Current status: We've implemented the fix for this issue by rolling back a configuration update to the underlying infrastructure. Our telemetry and internal validations indicate that service has been restored. We'll continue to monitor the environment until we're confident all services are functioning properly. Customer experience: Customers hosted in the specified regions may have been unable to access or use Snowflake services and features using Snowsight. Workaround: There were no available workarounds for this issue. Incident start time: 07:00 UTC September 04, 2026 Incident end time: 08:30 UTC September 04, 2026 Preliminary root cause: A configuration update to infrastructure components responsible for authorizing incoming network traffic caused the components to restrict this traffic.
- resolved
Current status: We've implemented the fix for this issue and monitored the environment to confirm that service was restored. If you experience additional issues or have questions, please open a support case via Snowflake Community or the Support page in Snowsight. Customer experience: Customers hosted in the specified regions may have been unable to access or use Snowflake services and features using Snowsight. Workaround: There were no available workarounds for this issue. Incident start time: 07:00 UTC September 04, 2026 Incident end time: 08:30 UTC September 04, 2026 Preliminary root cause: A configuration update to infrastructure components responsible for authorizing incoming network traffic caused the components to restrict this traffic. A root cause analysis (RCA) will be conducted and a summary will be made available within 5 business days.
- postmortem
Snowflake Engineering has completed the postmortem of this service incident. A detailed Root Cause Analysis \(RCA\) is available on the Snowflake Community site: [https://community.snowflake.com/s/article/INC20000199](https://community.snowflake.com/s/article/INC20000199)
Rewindex changes for this incident
- Critical incident: INC20000199 2026-09-04 07:34 UTC
Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab). Snowflake profile · Recent Snowflake incidents · Markdown · JSON