Outage in Snowflake
INC20000199
Resolved MajorIncident Report
Summary AI Generated
**INC20000199 – Snowflake Data Cloud Outage | September 4, 2026** A misconfigured infrastructure update caused network traffic authorization components to incorrectly restrict incoming traffic, rendering Snowflake Data Warehouse inaccessible via Snowsight for approximately 1.5 hours (07:00–08:30 UTC). The incident lasted a total of 2.6 hours including investigation and monitoring, with no workarounds available during the outage. Snowflake resolved the issue by rolling back the configuration change and confirmed full service restoration by 10:10 UTC.
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
Components affected
Snowflake Data Warehouse (Database)Trusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
about 1 hour ago - at 09/04/2026 10:10AM
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.
MONITORING
about 2 hours ago - at 09/04/2026 09:04AM
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.
INVESTIGATING
about 3 hours ago - at 09/04/2026 08:35AM
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
INVESTIGATING
about 3 hours ago - at 09/04/2026 08:05AM
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
about 4 hours ago - at 09/04/2026 07:34AM
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
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